Audio Input Signal Selector Relay Board/Signal Switching Amplifier Board + RCA

Audio Input Signal Selector Relay Board/Signal Switching Amplifier Board + RCA L

Audio Input Signal Selector Relay Board/Signal Switching Amplifier Board + RCA

Audio Input Signal Selector Relay Board/Signal Switching Amplifier Board + RCA L

Latching relay board 12vdc ( single pushbutton input to latch / unlatch relay )

8 Channel AC/DC 24V Rail Mount Relay Interface Module Input Boards

7-24V Modbus Rtu 1/2/4 Channel Relay Module Switch input output RS485/TTL UART

4-ch Modbus-RTU Relay Switch Module Signal input and output RS485 TTL Controller