3pcs 2 Channel Relay Module 12V with Optical Coupler Protection Relay Extended Board For Arduino MCU

Description: Dimensions: 50.6 x 38.8 x 19.3mm (L x W x H) Weight: 30g The board is surrounded by four fixed screw holes with a diameter of 3.1 mm, which is convenient for installation and fixing. High quality relay, single-pole double-throw. One common end, one constant beginning, one constant closing end. Photocoupler isolation, good anti-interferenceLow level suction, high level release. The state indicator lights up when sucking in and out when releasing. Feature: VCC is the system power supply and JD_VCC is the relay power supply. Default 5V relay, insert jumper cap. Maximum output of relay: DC 30V/10A, AC 250V/10A Wiring instructions: VCC: Positive Pole of System Power Supply GND: Negative Electrode of System Power Supply IN1-IN2: Relay control port Package Included: 3 x 2 Channel 12V Relay Module