DC12V Voltage Detection Module/Relay Switch Charging Discharging Detection 99.9V
5,94 €
Adapter Module. Step up module. Step down module. Display module. Wireless module. GPRS Board. Relay module 1. In standby mode, press the "minus" button for 3 seconds to turn off the display, and press it again for 3 seconds to turn on the display.
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