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Driving port signal voltage:3.6-24V Output port voltage port:3.6-30V Jumper cap can achieve output port is high potential or pull down output Onboard 4-channel 817 are independent: can achieve different voltage control at then same time This module is used when it is necessary to isolate the control in actual work and voltage conversion. for the friend of the single-chip or PLC, it is only necessary to judge when the output port is low. The photoelectric isolation has strong anti-interference ability， and the combination control of many different devices can be realized later, such as triode, MOSt u be, and small power relay module. Package include: 3 x PC817 4-channel optocoupler isolation board NOTE: The input port is shared with GND The output ports are independent of each other It is optocoupler output.V and G will be connected after input valid signa in input port
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