RS485 TTL Modbus RTU Relais Schalttafel 4 Wege Optokoppler Isolate Input Output
10,08 €
1 X Modbus RTU 4 Way Relay Module. IN1 - GND (default is high level, low level after switching on) computer sends instructions to read switch status. IN2 - GND (default is high level, low level after switching on) computer sends instructions to read switch status.
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