Relay Module
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LCUS-16 16-channel USB relay module Computer serial port con -
8 channels of 5V/12V/24V high and low level optocoupler isol -
DC7-28/5V power supply ESP8266 WIFI dual channel 30A relay m -
DC7-28/5V power supply ESP8266WIFI four 30A relay modules -
220V power supply Modbus RTU quad relay module RS485/TTL UAR -
4-way Bluetooth 5.0 relay bLE Bluetooth Bluetooth networking