Onboard CH340USB control chip Equipped with stable USB-to-serial chip and microcontroller, serial port debugging software can be used on the computer to send serial port commands to control the opening and closing of the relay Onboard 5V, 10A/250VAC, 10A/30VDC relay, long relay life, can be continuously attracted 100,000 times With overcurrent protection and relay diode freewheeling protection function Onboard power LED indicator and relay status LED indicator
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