20pcs 1 Channel 3.3V Low Level Trigger Relay Module Optocoupler Isolation Terminal

Description Normally open interface maximum load AC 250V 10A DC 30V 10A SMD optocoupler isolation strong driving capability stable performance trigger current 5mA Fault tolerant design the relay will not move even if the control line is broken Power indicator green relay status indicator red The interface is designed humanized and all the interfaces can be directly connected by wiring terminals which is very convenient Two module interface 1 DC Connect the power supply positive pole voltage 3 3V 2 DC Connect the power negative pole 3 IN Low level 3 3V control relay pull in Relay output terminal 1 NO Relay normal open the relay suspends before pulling in and then short connect with the COM 2 COM Relay common interface3 NC Relay normal close short connected with COM before pulling inand suspended after pulling in Package Included 20 x 1 Channel 3 3V Relay Module