SainSmart 2 channel Signal Relay for Arduino UNO R3 MEGA2560 MEGA1280
Interface Definition* IN(x): High level. Low level cut-off* This item has been assembled,* Led indicator for each relay.* FR-4 Fiber glass PCB ( Double Layer ).* PCB thickness: 1.6mm.* Size: 54 x 46 x 16 mm .* Power Supply: 5V DC / 40mA (relay all ON).Input Control Signal Voltage* 0V - 0.5V Low stage (relay is OFF),* 0.5V - 2.5V (unknown state).* 2.5V - 5V High state (relay is ON).Input control signal high state current* 2.5V: 0.1mA* 3.3V: 0.18mA* 5V: 0.35mARelay Specifications* Voltage: 5V DC.* Current: 8.3mA.* Resistance: 2880 ohm +-10%.* Contact Resistance: <0.1 ohm.* Contact Capacity: 125V AC / 1A, 30V DC / 2 A.NOTE:The link is the documents about SainSmart 2 channel Signal Relay.https://s3-ap-northeast-1.amazonaws.com/sain-amzn/20/20-018-904/2+signal.rar