HiLetgo 12V 1 Channel Relay Module With OPTO Isolation Support High or Low Level Trigger Module uses genuine high quality relay, normally open interface maximum load: AC 250V / 10A, DC 30V / 10A Using optocoupler chip isolation, strong drive capability, stable performance; trigger current 5mA Module can be set by jumper high or low trigger Fault-tolerant design, even if the control line is broken, the relay will not move The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient