3pcs 1CH 12V 30A Relay Module High Power Relay Control Board Single Switch

Description: 1: Model: YY-30(12V) 2: Output capacity: AC 250V/30A, DC 30V/30A 3: Using the industry's top quality ultra-small optocoupler, strong anti-interference ability, stable performance 4: 9.5mm black barrier type terminal block, standard 30A terminal, stable and reliable, reliable quality 5: Board size: 51x50.8mm Module Interface Description: 1. DC+: External DC power supply positive 2. DC- : External DC power supply negative 3. NO: Relay normally open interface, it is vacant before closed the relay, after that short circuit with COM. 4. COM: Relay public interface Package included: 3 x 1CH 12V 30A Relay Module