4 Channel Relay 5V Shield Module For Arduino DIY Four Channel Relay Electronic
Product Description
5V 4 Channel Relay Shield for Arduino UNO
5V 4-Channel Relay interface board, and each one needs 15-20mA Driver Current Equipped with high-current relay, AC125V 3A ; DC24V 3A Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
Note: Please contact us if you need the schematic.
6. With backlight power control, can be connected via jumper settings are backlight power. Plug the jumper to connect the backlight off, unplug the jumper to disconnect the backlight power
7. Contrast can be adjusted by turning the blue potentiometer clockwise increase, counterclockwise weakened. Potentiometer design on the front, enabling customers to freely adjust anytime
8. Modules can be cascaded to cascade up to eight. By short-circuiting A0/A1/A2 modify the device address. The default address is 0x27.
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