User definable modbus
Listado user definable modbus
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Número de dispositivos conectados 32 enlace en serie modbusip) y protección por contraseña tipo de conexión integrada ethernet tcp/ip rj mbps 1 par trenzad enlace serie bornero extraíble de 5 vías modbus rtu y ascii rs kbps enlace serie microinterruptor modbus rtu y ascii rs kbps enlace serie rj45 rs kbpsprotocolo bootp, cliente fdr leer/escribir registros modbus de dispositivos conectados agente snmp, administración del dispositivo con un administrador snmp cortafuegos miniatura incorporado (filtr
$ 1000
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Pdf bloque de 4 entradas digitales o 4 hsc, comunica via modbus rtu via rs- wiremanual del producto http://wwwhu/_download/novus/operating_manual_digirail-4c_english
$ 120
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Se vende controlador yokogawa ut35a con modbus, nuevo en caja
$ 550
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Comunicación sr3mbu01bd modbus network slave communication module - for sr3 24 v dc smart relay
$ 200
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Módulo de comunicación modbus sl - tipo de producto o componente - módulo de interfaz - compatibilidad de gama - compact ns630b1600 - masterpact nt - compact ns1600b3200,masterpact nw,compact nsx,powerpact p,powerpact l,powerpact j,powerpact h
Lima (Lima)
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Sis caterpillar 2016 3d user completo et cat soporte tecnico - s/
Lima (Lima)
$ 350
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Libro original logplot 7 user's manual con 306 caraslogplot 7 de rockware precio 50 soles, negociabletambién por 10 soles adicionales se ofrece el programa crackeado
$ 50
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user manual d2-user-m available as a free download, or purchase hard copy separatelyadvanced instruction set includes up to 16 pid loops, ascii in/out instructions, and modbus rtu instructionsbottom port also supports remote i/o master, directnet master/slave rs-422, modbus rtu master/slave rs-485/rs-422, and ascii in/out4k words total (156k words v-memory), rll/rllplus programming, real time clock/calendar, two built-in rs-232c portsalso supports dl205 local base expansion (using -1 bases), up to four additional basesrequires directsoft release 4battery not includeddirectlogic 205 series plc cpu module, 300 or later for programming8k words ladder - flash memory, 14
$ 450
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Software puerto com redirector y documentación para el usuario sus ventajas: pasarela de enlace modbus entre modbus rtu / ascii y modbus/tcp todas las conexiones enchufables con borne de tornillo combicon configuración por gestión basada en web software puertos com virtuales en volumen de suministroservidor para aparatos serie, para la conversión de una interfaz 232/422/485 serie a ethernet, soporta aplicaciones tcp, udp, pasarela de enlace modbus y ppp, inclsegunda generación fl comserver uni
Lima (Lima)
$ 650
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Protocolo modbus con salida rs485 bajo demandaposibilidad de software on-line en pc usando la funcionalidad modbus2 salidas de sirena general supervisada, retardable de 0 a 10 minutos, y protegida cada una por fusible autorearmablecofre metálico con puerta atornillada frontalmente, 4 pretaladros de 28 mm y 1 rectangular en el fondo de 140 x 40 mm para el paso del cableado, además de espacio para 2 baterías de 7 ahcertificada según normativa en 54-2 y en 54-4 con marcado ce1 salida de avería inmediata a través de un contacto seco na/nc (normalmente abierto/normalmente cerrado)dispone de modo de pruebas para facilitar la comprobación de detectores y pulsadores de forma rápida y sencillacontactid bajo demanda2 salidas auxiliares de 30 v/dc supervisadas y protegidas por un fusible autorearmable para alimentación externa (electroimanes de puertas cortafuego, sirenas, etc)permite configurar los umbrales de línea abierta, alarma detector y alarma pulsador para ajustarse al funcionamiento con otros detectores1 salida de alarma inmediata a través de un contacto seco na/nc (normalmente abierto/normalmente cerrado)admite configurar la última zona de detección como una entrada de supervisión de un sistema externo de protección contra incendios dando indicación de averíaco-clvr12z centrales contra incendios de hasta 12 zonas para uso de detectores y pulsadores convencionales
$ 1050
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· modbus rtu + iec · ser (sequence of event recorder) · fácil instalación gracias a su mínima profundidad· medidas integrales· control de interruptorlos relés poseen características principales, tales como: · integración con lpct (low power current transformer) · verdadero bajo costo para ser un relé multifuncional digital
$ 999
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user-definable modbus/tcp slave addressing - supports ethernet/ip* adapter mode - supports restful api for iiot applications - 2-port ethernet switch for daisy-chain topologies - save time and wiring cost with peer-to-peer communications - active communications with mx-aopc ua server - supports snmpv1/v2c - easy mass deployment and configuration with iosearch utility - friendly configuration via web browser - simplify i/o management with mxio library on either a windows or linux platform - class i division 2, atex zone 2 certification - wide operating temperature range: -40 to 75°c (-40 to 167°f)
$ 899
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Pagos: p or deposito bancario, mercado pago o contra entrega1 velocidad de transmisión 75bps- bps, hasta 6mbps distancia hasta 1conversor usb a rs485 soporta win7, xp, vista, linux ymacos compatibilidad usb 2garantia: 3 meses de garantia por defectos de fabricación(todos los producos compatibles pasan por nuestra inspección)nuestros productos garantía: nuestros productos compatibles, modulos ysensores pasan por pruebas e inspección para asegurar su integridad y correcto funcionamiento, garantía de 3 meses por defectos de fabricaciónenvios: por olva courier en 24 horas despues de concretado y verificado el pago(6 soles lima, 14 soles provincia)2 km,con rendimiento anti-jamming del sitio industrial temperatura de trabajo -40 ° c ~ + 85 ° c dimensión 63cm alimentación no necesita alimentación externa, alimentado por puerto usb somos distribuidor autorizado de arduino y 4dsystems, tambien contamos con productos compatibles, modulos, sensores, y accesorios en nuestra tienda virtual
$ 19
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Nuestros productospagos: p or deposito bancario, mercado pago o contra entrega1 velocidad de transmisión 75bps- bps, hasta 6mbps distancia hasta 1conversor usb a rs485 soporta win7, xp, vista, linux ymacos compatibilidad usb 2garantia: 3 meses de garantia por defectos de fabricación(todos los producos compatibles pasan por nuestra inspección)envios: por olva courier en 24 horas despues de concretado y verificado el pago(6 soles lima, 14 soles provincia)2 km,con rendimiento anti-jamming del sitio industrial temperatura de trabajo -40 ° c ~ + 85 ° c dimensión 63cm alimentación no necesita alimentación externa, alimentado por puerto usb somos distribuidor autorizado de arduino y 4dsystems, tambien contamos con productos compatibles, modulos, sensores, y accesorios en nuestra tienda virtual
$ 19
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Opcionalmente, el dispositivo puede configurarse con un relé de alarma que funciona en modo de fuente de 3 hilos y / o con comunicaciones modbusel producto estándar cuenta con una salida de alimentación de bucle de 2 hilosel detector de monóxido de carbono de la serie cmd5b1 utiliza un sensor electroquímico superior para confiabilidad y precisión incluso en las aplicaciones más críticas
$ 150
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5kw with 150% overload for 60sec unfiltered i/o-interface: 4di, 2do,2ai,1ao fieldbus: uss/ modbus rtu with inbuilt bop protection: ip20/ ul open type size:fsd 240x207x173(wxhxd)siemens variador de velocidad 3ac 10hp 6sl3210-5be27-5uv0 sinamics v20 3ac380-480v -15/+10% 47-63hz rated power 7
Lima (Lima)
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Detalle técnico: - alimentación v ac rce - 8 entradas digitales 230 v ac - 4 salidas digitales a relé 10a - web server e interfaz ethernet integrados - display integrado que permite la programación modbus tcp
$ 320
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5 a tensión de medida 110 v ac hz 690 v ac hz v ac hz v ac hz modo de funcionamiento:manual número de operación de cuadrante para aplicación de generador: 4 conexión del dispositivo communication protocol: modbus interface: rs485 temperature external probe tipo de pantalla pantalla gráfica iluminada con contraluz 55 x 28 mm whatsapp se recoge en el retablo - comaspaso: 12 [us] tensión de alimentación asignada v ac hz v ac hz 110 v ac hz corriente de medición: 0schneider electric varlogic nrc12 controlador de factor de potencia regulador de energía reactiva 12 salidas número de contactos sal
$ 600
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Medidor de energía para instrumentación básica thd, demanda, espectro de armónicos, memoria de 80 kb, registro de alarmas con fecha y hora, reloj no volátil y comunicación rs hilos (modbus), precisión clase 0marca: schneider electric te asesoramos en la instalación y configuración del equipo5 s iec y ansi cequipo semi-nuevo envio gratis en lima
$ 1000
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5 a tensión de medida 110 v ac hz 690 v ac hz v ac hz v ac hz modo de funcionamiento:manual número de operación de cuadrante para aplicación de generador: 4 conexión del dispositivo communication protocol: modbus interface: rs485 temperature external probe tipo de pantalla pantalla gráfica iluminada con contraluz 55 x 28 mm whatsapppaso: 12 [us] tensión de alimentación asignada v ac hz v ac hz 110 v ac hz corriente de medición: 0schneider electric varlogic nrc12 controlador de factor de potencia regulador de energía reactiva 12 salidas número de contactos sal
$ 800
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Por favor realice todas las consultas antes de dar en comprarpagos: por deposito bancario interbank, bcp, mercado pago o contra entregacontra entregas: centro comercial real plaza proenvios: por olva courier en 24 horas despues de concretado y verificado el pago garantia: 3 meses de garantia por defectos de fabricaciónsomos distribuidor autorizado de arduino y 4dsystems, tambien contamos con productos compatibles, modulos, sensores, y accesorios en nuestra tienda virtual
Lima (Lima)
$ 19
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Com/watch?v=kh2eb2zgzbs features dtxpress iv module 3 tp65 single-zone pads tp-zone snare pad w/controller knob pcy150s 3-zone ride cymbal pad 130sc 3-zone cymbal pad pcy130 single-zone cymbal pad rhh130 stereo hi-hat controller hh650 hi-hat stand yamaha kp100 dtx kick pad trigger rack polyphony: 32-note voices: 427 drum & percussion, 22 keyboard/effects drum kits: 50 preset, 20 user songs: 63 pre-recorded, 20 user dual voice capability effects: reverb x 16 types, master eq trigger trigger setups: 7 preset, 4 user pad controller: snare adjust, tuning, tempo pad functions: drum kit inc/dec, click set inc/dec, tempo inc/dec, click on/off pad songs: start/stop, chase, cut off, 3 simultaneous songs sequencer note capacity: note resolution: 96 ppq track: 1 songs: 3 demo, 41 practice songs, 19 pad songs, 20 user metronome tempo: bpm, tap tempo beat 1-9 timing: accent, quarter note, eighth note, sixteenth note, triplet click sound sets: 6 preset, 1 user click presets: 30 click timer: seconds connectors: trigger inputs: 8 outputs: l/mono, right headphone jack, aux in midi out cash on collection only thanksyamaha dtxpress iv specialmuestra y fantastico solo s/
$ 3400
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8 kg remote control back to top features: power, source search selection, computer, s-video, video, easymp®, a/v mute, freeze, user id, auto, aspect, color mode, num, page up and down, e-zoom, volume, help, menu, enter, esc and pointer functions operating angle: right / left: front: ±60 degrees rear: ±30 degrees upper / lower: front: -30 to +45 degrees rear: ±30 degrees operating distance: 1943 / pal / m-pal / n-pal / pal60 / secam sdtv / hdtv interfaces: computer/component video: mini d-sub hd 15 pin x 1 s-video: mini din x 1 composite video: rca x 1 audio in: mini stereo x 1 in or out user selectable variable audio out: mini stereo x 1 in or out user selectable usb connector: type b x 1 (usb display with audio and mouse/keyboard control), type a x 1 (for usb memory device) speaker: 1 w mono audio signal: 500 mv rms / 47k ohm operating temperature: 41° to 95° f (5° to 35° c) power supply voltage: v ± hz ac power consumption: network on: 243 w, 9 w standby network off: 4 w standby fan noise: eco mode: 30db normal mode: 39db security: kensington®-style lock provision dimensions back to top including feet: 117 ft (6 m) notes back to top 1 light output varies depending on modes (color and white light output)white light output measured using iso standard8" (w x d x h) excluding feet: 116" (w x d x h) weight: 32 lamp life will vary depending upon mode selected, environmental conditions and usagespecifications back to top projection system: epson 3lcd, 3-chip optical engine projection method: front / rear / ceiling mount driving method: epson poly-silicon tft active matrix color brightness (color light output): lumens 1 white brightness (white light output): lumens 1 (iso standard) aspect ratio: 4:3 (supports 16:9) native resolution: x 768 (xga) resize: 640 x 480 (vga), 800 x 600 (svga), x 800 (wxga), x (sxga), x (sxga+), x 900 (wxga+), x (wsxga+), x (uxga) lamp type: e-torl™ 170 w uhe lamp life: eco mode: hours 2 normal mode: hours 2 throw ratio range: size (projected distance): ') keystone correction: automatic: vertical: ±30 degrees manual: vertical: ±30 degrees usb plug 'n play: mac® compatible via dvi to vga adapter (not included) contrast ratio: up to color reproduction: million colors projection lens back to top type: manual focus / (optical) zoom f-number: focal length: mm zoom ratio: optical zoom other back to top display performance: ntsc: 560 line pal: 560 line (depends on observation of the multi-burst pattern) input signal: ntsc / ntsc4lamp brightness decreases over time
$ 400
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Com/watch?v=kh2eb2zgzbs specifications: tone generator: awm2 maximum polyphony: 32 notes voice memory: 449 voices/427 drum, percussion voices, 22 keyboard voices drum kits: 50 preset, 20 user effects: reverb 19 types, master eq trigger setup: 7 presets, 4 user pad controller: snare adjustment, tuning, tempo song memory: 3 demo songs, 41 training songs, 19 pad songs, 20 user songs recorder: real time metronome: tempo /min, beat 1-9, tap tempo function, accent, , triplet training functions: measure break, groove check, rhythm gate function display: 16 characters x 2 lines backlit lcd, 3-digit 7-segment led connections: trigger input jack (standard stereo phone jack l: trigger, r: rim switch) trigger input: (standard stereo phone jack l: trigger, r: trigger) hi-hat controller jack, output l/mono r jack (standard phone jack) phones: (standard stereo phone jack), aux in jack: (stereo mini jack), midi out, dc in power supply: dc12v power consumption: 13yamaha dtxpress iv special0 w dimensions/weight: 252(w) x 147(d) x 52(h) mm/898g accessories: ac adaptor (pa-3c)muestra y fantastico solo s/#### principal foto es real###
$ 3400
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Estou vendendo um transmissor de marca fm user modelo cze - 15a de 15 watts de potência com fonte de alimentaçao e antena externa pleno terra 1/4 de onda + mais cabo kit completo
Perú
$ 650
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Pc compliant front panel user controls power on/off switch; 5-button osd; dual-input switch user-modes 8 preset modes and 10 additional modes languages english french german spanish italian dutch swedish russian japanese asset control yes on-screen user controls size and positioning contrast brightness moiré correction tilt (rotation) selectable color temperature orthogonality degauss (automatic at power on; manual) convergence (h/v/pre-set) reset agency approvals/certifications ul/csa/cul approval iso vdt guidelines mpr-ii compliant tco ‘99 fcc approval microsoft whql certified energy star compliant ce compliant power supply universal; v (auto-ranging), hz warranty limited three-year parts and repair labor, service provider labor, and on-site servicenext business day advanced exchange direct replacement service available during warranty periodvendo monitor de 21 y 22 pulgadas hp triniton pantalla plana en buenas condiciones doble salida vga cables en buenas condiciones p-inch crt monitor- overview product description product features link to warranty information link to quickspecs product description p-inch crt monitor top product features features specifications tube type fd trinitron aperture grille tube picture tube size (diagonal) 21 in (5324 mm anti-glare yes anti-glare yes plug and play vesa ddc2bi and ddc2b3 cm) viewable image area (diagonal) 19certain restrictions and exclusions apply3 cm) display resolution support for a maximum display resolution of x pixels at a vertical sync rate of 75hz preferred flicker free resolution x hz aperture grille pitch 0for details, contact hp customer support at (usa) or (canada
$ 130
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The corporate directory integrates with the lightweight directory access protocol version 3 (ldap3) standard directory settings: the settings feature key allows the user to adjust display contrast, select background images (if available), and select from a large number of unique ringer sounds through the user preference menucisco cp-g voip ip telefono - refurbished en caja stock 20 unidades estan en perfectas condiciones 9 de 10 puntos cosmeticamente precio especial por mas de 4 unidades cisco g $ voip ip phone pulled from a working environmentuntested sold as is cisco cp-g features and functions 2 lines 2 ethernet ports power over ethernet supported protocols: sccp, sip for cisco call manager messages: the phone offers direct access to voicemailconfiguration can be either automatically or manually set up for dynamic host control protocol (dhcp), trivial file transfer protocol (tftp), cisco unified callmanager, and backup cisco unified callmanager instancesother available settings submenus include device configuration and security configuration services: the cisco unified ip phone g allows users to quickly access diverse information such as weather, stocks, quote of the day, or any web-based information using xml to provide a portal to an ever-growing world of applications, features, and informationnetwork configuration preferences also can be set up (usually by the system administrator)this feature allows users to quickly and effectively return calls using direct dial-back capabilitydirectories: the phone identifies incoming messages and categorizes them for users on the screenabout us feedback garantía: garantia 6 meses
$ 75
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Pc compliant front panel user controls power on/off switch; 5-button osd; dual-input switch user-modes 8 preset modes and 10 additional modes languages english french german spanish italian dutch swedish russian japanese asset control yes on-screen user controls size and positioning contrast brightness moiré correction tilt (rotation) selectable color temperature orthogonality degauss (automatic at power on; manual) convergence (h/v/pre-set) reset agency approvals/certifications ul/csa/cul approval iso vdt guidelines mpr-ii compliant tco ‘99 fcc approval microsoft whql certified energy star compliant ce compliant power supply universal; v (auto-ranging), hz warranty limited three-year parts and repair labor, service provider labor, and on-site servicenext business day advanced exchange direct replacement service available during warranty periodvendo monitor de 21 y 22 pulgadas hp triniton pantalla plana en buenas condiciones doble salida vga cables en buenas condiciones p-inch crt monitor- overview product description product features link to warranty information link to quickspecs product description p-inch crt monitor top product features features specifications tube type fd trinitron aperture grille tube picture tube size (diagonal) 21 in (53for details, contact hp customer support at (usa) or (canada ver descripción completa colapsar descripción24 mm anti-glare yes anti-glare yes plug and play vesa ddc2bi and ddc2b3 cm) viewable image area (diagonal) 19certain restrictions and exclusions apply3 cm) display resolution support for a maximum display resolution of x pixels at a vertical sync rate of 75hz preferred flicker free resolution x hz aperture grille pitch 0
$ 110
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The zero touch gestures user interface 7mpu- of the angular velocity sensor range is +/- and +/-500 °/sec (dps), can be accurate after fast and slow movement, and user programmable control of accelerator is the sensing range is +/-2g and 16g +/-8g and +/-4g3v+/-5%;vddio is 1up to 400khz fast mode of i2c, or up to 20 mhz spi serial host interface (serial host interface) 14mpu- can be work under different voltage vdd interface power supply voltage is 2portable navigation devices characteristics: 1has 131 lsbs/°/sec sensitivity and the sensing range is +/- and +/-°/sec 3 shaft angular velocity sensors(gyro)gyroscope range: +/-°/s 4microcelperu mpu- accelerometer gyroscope 3 axis gyro module 3other features include a built-in temperature sensor, is included in the operating environment only oscillator of plus or minus 1% changeprogrammable control is interrupted (interrupt) support gesture recognition, pan, zoom in close, rolling, rapid decline in interrupts, the high - g, zero motion sensors, touch induction, shaking induction function9mm(qfn), is the size of the revolutionary in the industry3d remote control 12motion processing database support android, linux and windows 7programmable control, and the program control range is +/-2g, +/-4g, +/-8g,+/-16g 3 axis acceleratorintelligent mobile phone 9mpu- packing size 4x4x0augmented reality 3optical image (ois: optical image stabilization) 5pedestrians navigator 6the operation of the built-in time deviation and magnetic sensor calibration calculation technology, from the customer shall be in addition to demand correctiongyroscope operate current: 5ma, gyroscope standby current: 5a; accelerator operation current: 350a, current accelerator power saving mode: 20a@10hz 13built-in frequency generator in all temperature ranges (the full temperature range) only plus or minus 1% frequency changeathletic games measurement 2conform to the rohs and environmental standards se hacen envios a provincias, contamos con todos los sensores compatibles con arduino, visite nuestra web esta semana solo atenderemos hasta el miercoles 19 de febrero y volveremos a atender con normalidad desde el martes 25 de febrero ver descripción completa colapsar descripción garantía: 3 meseschip built-in 16 bit ad converter, 16 bits of data output 7the vdd voltage is 2in synchronous digital input pin (sync pin) support video electronic phase stability with gps technique 10electron image (eis: electronic image stabilization) 4acceleration range: +/-g 5power supply: 3v-5v power 3communication: standard iic communication agreement 6product transfer from the highest to 400 khz of i2c or up to 20 mhz of spiremoval of accelerator and gyro axis sensitivity, lower setting given and the influence of sensor driftposture shortcut 8invensense motion processing database, processing of position measuring of complex data, reduces the movement processing operation for load of the operating system, and provide a framework for application development apig tolerance of collision 16mpu - incorporates 3 axis gyroscope, 3 axis accelerator, and can be connected by i2c ports of other accelerator, magnetic sensors, or other digital motion sensor processing (dmp: digital motion processor) hardware acceleration, engine by the i2c port mainly in the form of a single data flow, output to the application of the complete calculus 9 shaft fusion technologyin digital output axis 6 or 9 shaft rotation matrix, quaternion (quaternion and euler angle format (euler angle forma) data fusion of calculusdigital motion processing (dmp: digital motion processing) engine can reduce the complexity of calculation data fusion, sensor synchronization, and load position sensor, etchandheld game products 11with digital temperature sensor output 9tablet devices 103v-5v for arduino diy description 154mm mpu- is the world's first integrated 6 axis motion processing components, compared to many components, from the combination between the axis of gyroscope and accelerometer in bad problem, reduce the size of a large number of packaging3v+/-5%, logical interface vvdio power supply of 1minimum tailored for portable products the most thin packaging (qfn) 4x4x0
$ 30
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user cannot disassemble or repair the controller without permission 2)contact area of connector should be large enough to prevent virtual connection and heat accumulation caused by oxidation at connection package included: 1 x solar controller 1 x user manual se realizan envios a provincias esta semana solo atenderemos hasta el miercoles 19 de febrero y volveremos a atender con normalidad desde el martes 25 de febrero ver descripción completa colapsar descripción garantía: 3 mesesbefore installing and adjusting the connection of controller, please make sure to disconnect the connection of photovoltaic panel and the fuse or breaker around battery terminal 3)please follow the steps below in installation: 1)though the controller has inverse connection protection function, it is better to avoid the inverse connection of photovoltaic panel in engineered installation 2)connection should be strong and reliable5 cm package weight: 290g/10this controller has multiple load control modes and is adaptable to different industries2 oz system voltage of pv: 40v maximum voltage of pv: 30a maximum discharge current: 30a maximum output voltage: 12v/24v maximum output power: 360w/720w compatible battery: lead-acid cell charge way: 3-state- pwm charge usb charge port: 5v 1a temperature compensation: yes this item is equipped with a lcd display and can be conveniently switched between modes and parameter note: you had better connect to the battery first when you operate the system during the installation and usage, please make sure to obey by the following safety regulations and notices to avoid the damage to controller 1)and, it has perfect and liable battery charge and discharge period managementthe product can be applied to the following occasion: 1)outdoor environment monitoring system 2)automatic control system for agriculture and garden 3)solar power system 4)communication station, wifi hotspot 5)street lighting system 6)other systems which are supplied by solar energy and have requirements power emi indicator specifications: color: black size: 15installation on large-sized metal piece is more beneficial to heat dissipationafter installation, ensure all the wire connections are reliable to avoid heat accumulation for virtual how to use: this item will be heated during operationthe charge circuit is characterized by high efficiency and low consumption by controlling the mosfet of the ultra-low internal resistance with pwmthere is no maintainable part in the controllerit is a must to mount it on the surface that made of nonflammable materialsmicrocelperu lcd 30a pwm solar panel regulator charge controller 12v/24v 360w/720w dual us why choose this item: 30 x 50mm lcd display screen, can show the status of charging and discharging in time with dual usb ports, can synchronously charge one phone and one ipad fashionable and practicable design high quality and durable nice shape and unique style light weight and portable more detail about this item: this is a new intelligent solar controller, which is equipped with industrial-grade stm 8 microprocessor to control the charge and discharge process
$ 195