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Modbus RTU 4 Channel Relay Module 4CH Input Optocoupler Isolation RS485 MCU For Arduino

Modbus RTU 4 Channel Relay Module 4CH Input Optocoupler Isolation RS485 MCU For Arduino

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Description:
 
4 channel relay output (one normally open and one normally closed)
STM8S103F3 MCU
4 channel optocoupler isolation
4 Relays Close LED Indicators
Round DC interface and terminal DC interface. Convenient power wiring (supply voltage 12V)
4 channel input interface
RS485 communication interface.
A power indicator
A User LED Lamp
Reset button
 
Package Included:

1 x Modbus RTU 4 channel Relay Module