Top Positive Review for Relay on Banggood|Shopping New Zealand

40% OFF Geekcreit® 5V 4 Channel Relay Module For PIC ARM DSP AVR MSP430 Geekcreit for Arduino - products that work with official Arduino boards US$5.99 US$9.99 View It

Overall:

Kedam 03/08/2019

Very well constructed. To work with 5volt board as Arduino mega, leave the jumper connected and connect 5 v to Vcc and gnd to GND The inputs must be connected to ground to switch the relay , so a LOW output from arduino will switch the relay on. No connection on the input or a HIGH output from arduino will switch relay off With 3.3 Volt boards like Arduino Due disconnect the jumper ,connect Vcc to 3.3 V and JD-VCC to 5 V, GND to GND

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