Module description:1. Maximum load on normally open pin: AC 250V/10A, DC 30V/10A.2. Trigger current 5mA;3. Module can be set high level or low level trigger by jumper wire;4. Power indicator light (green), relay status indicator light (red);5. Module size: 50mm*41mm*18.5mm.Module interface specifications:1. DC+ : DC power supply positive pole2. DC- : DC power supply negative pole3. IN1 : channel 1