The KeyeStudio relay shield has integrated a 4-channel 5V relay module, which is fully compatible with the UNO R3 control board. The 4-channel relay on the shield is active at HIGH level. Separately connect the 4-channel relay to the digital port 4, 5, 6, 7 on the UNO R3 board, then through controlling output HIGH or LOW to control the relay on and off. Features The relay shield is 5V active HIGH Contact capacity: AC120V / 3A ; DC24V/3A Onboard LED indicator for relay output status Indicator: 4 LEDs are red when the relay is driven high, the corresponding indicator will light up. Standard interface can be directly connected with microcontrollers. Fully compatible with UNO R3 board Be able to control various appliances and other equipment with large current. 3 M3 screw positioning holes for easy installation Power Interface: 5V DC power interface Channel: 4 channel PCB Color: Black Details Size: 69mm*54mm*26mm Weight: 39.4g
