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8-way electromagnetic relay module 5V1V24V optocoupler drive serial port 8-way low trigger control switch board

8-way electromagnetic relay module 5V1V24V optocoupler drive serial port 8-way low trigger control switch board

16 way relay 5V1V24V optocoupler isolation high and low level triggering PLC control board multi-channel relay module

16 way relay 5V1V24V optocoupler isolation high and low level triggering PLC control board multi-channel relay module

16 way relay 5V1V24V optocoupler isolation high and low level triggering PLC control board multi-channel relay module

16 way relay 5V1V24V optocoupler isolation high and low level triggering PLC control board multi-channel relay module

16 way relay 5V1V24V optocoupler isolation high and low level triggering PLC control board multi-channel relay module

16 way relay 5V1V24V optocoupler isolation high and low level triggering PLC control board multi-channel relay module

PWM pulse frequency duty cycle adjustable module square wave rectangular wave signal generator XY-PWM

PWM pulse frequency duty cycle adjustable module square wave rectangular wave signal generator XY-PWM

Modbus-Rtu7-24V 4-channel relay module switch input/output RS485/TTL anti reverse connection

Modbus-Rtu7-24V 4-channel relay module switch input/output RS485/TTL anti reverse connection