R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board for PLC LED Home Automation Door Lock

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Dc 12v relay module 8 channel modbus rtu rs485 relay board plc controller serial port switch with din35 rail box for arduino

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Mini dc 12v rs485 delay relay module modbus-rtu uart switch board for cctv camera ptz led security plc

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Dc 12v 24v 8 isolated io din35 c45 rail box uart rs485 mosfet module modbus rtu control switch board for relay plc led ptz

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2

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4.0

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Modbus rtu protocol 4 in 4 out control relay module rs485 switch input and output plc module

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New-4 channel dc 12v rs485 relay module modbus rtu and at command remote control switch for plc ptz camera security monitoring

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Dc 12v relay module 16 channel modbus rtu rs485 relay board plc controller serial port switch with din35 rail box for arduino

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32ch din35 c45 rail box dc 12v 24v rs485 modbus rtu relay board 485 bus remote control switch for led motor plc ptz camera smart

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4

5.0

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2

5.0

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1 pcs 16ch dc 12v rs-485 modbus rtu relay board rs485 bus remote control switch for led motor plc ptz camera smart home

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5.0

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16ch dc 12v serial port db9 uart rs232 relay module for plc pc com 3d printer led home lighting motor

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Dc 24v time delay relay led digital trigger delay time cycle timer control switch relay module for home automation led lighting

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5pcs 7v-32v ewelink zigbee relay module remote control wireless relay module smart home automation for door access alexa google

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Fk-8f3 wifi full color led control card usb asynchronous led controller with 4*hub75 port 768*32 pixels for p3,p4,p5,p10 module

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