DC 5V 12V 2 Channel RS232 Serial Port Control Relay Switch Board SCM Interface PC Relays DB9

Dc 12v r223c16 16 channel relay board rs232 db9 female interface serial port module for arduino

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5pcs/lot 5v low level trigger one 1 channel relay module interface board shield dc ac 220v for pic avr dsp arm mcu arduino

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Dc 12v 2 channel db9 female/male rs232 uart remote control switch board serial port relay module

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5.0

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Dc 12v pc com db9 rs232 serial port delay relay arm mcu uart remote control switch board

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5.0

Relay switch board 2 channel serial port relay module rs232 uart protocol db9 interface remote control switch board

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5.0

2 channel relay module serial port rs232 relay switch board tb351 uart protocol db9 interface remote control board

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Dc 5v-36v 12v 24v dual mos led digital time delay relay trigger cycle timer delay switch circuit board timing control with case

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18

5.0

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Esp8266 wifi dual 2 channel relay module esp-12f 5v power supply development board secondary development for smart home

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Dc 12v 16 channel relay module db9 pc com uart female interface serial port remote control switch rs232 r223c16 delay relay

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Dc 5v 2 channel relay module red green indicator light led for arduino arm pic avr dsp

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Dc 5v 1 2 4 8 channel relay module dc5v low level expansion board for scm household appliance control for arduino raspberry pi

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4

5.0

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Dc 12v 8 channel relay module bluetooth wireless control switch for android smart mobile phone app control momentary interlock

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5v 2 channel ch relay module high low level trigger with opto isolation supports two way relays module with optocoupler dc 5v

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Dc 7 -38v 16 channel 16 way serial relay module usb type b interface for arduino

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Dc 5v esp8266 relay module things smart home remote control switch 1 channel esp-01s wireless wifi relays for arduino phone app

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5.0

Rs232 dc12v delay relay module 1 channel db9 ttl232 serial port uart multifunctional remote control switch board 6 working modes

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Dc 5v 1 2 4 8 one channel relay module dc5v low level for scm household appliance control for arduino raspberry pi diy kit

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5v 2 channel usb relay module programmable computer control switch for smart home pc intelligent control

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5.0

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Dc 5v 12v 24v 1 2 4 channel relay module with optocoupler relay output 1 2 4 way relay module for voltage relays dc5v 12v 24v

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1 channel dc 3v relay high level driver module optocoupler relay module isolated drive control board for arduino

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Dc 7v-38v 16 channel serial port relay module board 6ch relay switch control for smart home 12v 24v

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Relay module 2 channel dc 5v 9v 12v 24v high and low level trigger relay control with optocoupler two way relays

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Two channel 5v relay module usb control switch / 2 way 5v relay module / computer control switch / pc intelligent control

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5pcs 5v 2ch 2 channel relay module board with optocoupler for arduino 8051 avr pic dsp arm msp430 ttl logic ac 250v 10a dc 30v

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5pcs relay module g3mb-202p g3mb 202p dc-ac pcb ssr in 5v dc out 240v ac 2a solid state relay module

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5.0

10pcs/lot 5v dc 10a power relay module one-channel srd-05vdc-sl-c srd-5vdc-sl-c 5pin pcb type for scm home appliance control

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1ch 1 channel relay module interface board shield for arduino 5v low level high level trigger one pic avr dsp arm mcu dc ac 220v

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1 channel way dc 5v board protector relay module board with optocoupler high support low for arduino trip level 1ch

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1

5.0

Modbus rtu 1/2 channel 5v relay module input / output rs485 / ttl communication interface relay 1 2 way relays indicator board

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7

5.0

-0.5%

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Ce039 dc 12v 4 channel rs232 relay board pc usb uart db9 remote control switch for smart home garage door car alarm farm motor

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1

5.0

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Dr21a01 mini dc 5v 12v 1 channel dpdt relay module polarity reversal switch board for arduino

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5.0

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5v 1 one channel relay module low level for scm household appliance control for arduino diy kit 3d printer parts relay module

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Led digital display time delay relay module dc 12v / 24v timing control programmable timer switch trigger cycle module with case

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5.0

5v two 2ch 2 channel relay module board with optocoupler for arduino 8051 avr pic dsp arm msp430 ttl logic ac 250v 10a dc 30v

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10pcs dc mini power relay 6-pin pcb mount circuit board relays 3v 5v 12v

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30a 2 channel relay module high-low level trigger control relay module relay switch board dc 5v/ac 100v-250v 110v 220v

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2pcs/lot signal relay tx2-5v tx2-12v tx2-24v 2 open 2 closed 8pin 2a

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5v 1 one channel relay module low level for scm household appliance control for arduino diy kit 3d printer parts

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10pcs dc ac 220v 1ch 1 channel relay module interface board shield for arduino 5v low level trigger one pic avr dsp arm mcu

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Dc 5v 4 channel relay module relay control panel with indicator 4 way relay output micro usb interface

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10pcs 5v 6v 9v 12v 24v flip-flop latch relay module bistable self-locking switch board for arduino uno pump door lock dc motor

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5v 4 channel relay module for arduino 4-channel optocoupler relay control board home smart switch with led indicator

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Dc 5v 2 channel relay module with optocoupler-isolated for arduino raspberry pi mega 2560 dsp avr pic arm mcu stm32 relay shield

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2 channel dc 5v relay module with optocoupler low level trigger expansion board for arduino raspberry pi

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Dc 5v 2 channel relay module with optocoupler-isolated for arduino raspberry pi mega 2560 dsp avr pic arm mcu stm32 relay shield

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5v 2 channel relay module with optocoupler isolation supports high and low trigger voltage 5v

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