RioRand 4 Channel Relay Module DC 5V 12V with Optocoupler Isolation Relay Control Board with Indicator Light, Relay Output

Riorand DC 5V 12V 4 Channel Relay Module with Optocoupler Isolation Single chip microcomputer Usually used in automated control circuits, it is actually an "automatic switch" that uses small currents to control high current operations. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. Relay output contact maximum:250A 10A and DC30V 10A Module operating voltage : 5V 12V Widely used:Domestic appliance, office machine, audio, equipment, automobile, etc. signal line LOW effective:Input IN1, IN2, IN3, IN4 Its Material?Electric Part?plastic material for high temperature and better solution performance Package included: 1*Riorand DC 5V 4 Channel Relay Module 1*Riorand DC 12V 4 Channel Relay Module