Modbus-Rtu485 Relay Module 1/2/8 Channel DC 12V Switch Input and Output RS485 TTL

Specification 1 Channel 1 RS485 communication interface2 TTL communication interface3 1 way input4 1 way output5 A user LED indicator6 A STM32F030F4 microcontroller7 A LEDs indicating the status of the relay8 Power terminal interface 12V power supply 2 Channels Input and output wiring and function description Output part NC normally closed COM common pin NO normally open Load 220V 10A is recommended below 220V 6A1 It is just the closing and opening of a switch without any voltage output 2 The relay can only be turned on and off by sending commands through 485 communication 3 By default NC COM is connected When 485 sends the opening command NC and COM are disconnected NO and C0 are connected and vice versa Input part IN1 connects to switch or voltage signal 3V 30V 1 The status of the switch can only be read through the computer and the relay cannot be controlled2 IN1 is connected to the switch no voltage signal IN1 connected to VCC is 1 and not connected to 01 RS485 communication interface2 TTL communication interface3 2 optocoupler isolated inputs4 2 optocoupler isolated output5 A user button6 A user LED indicator7 A power indicator8 A STM32F030F4 microcontroller9 2 relay status indicator LED lights10 Power terminal interface 12V power supply 8 Channels 1 RS485 communication interface 2 TTL communication interface3 8 channel optocoupler isolation output 4 8 channel optocoupler isolated input5 A reset button 6 A user button 7