Feature: Equipped with the anti-reverse wiring function of power supply and make it safer to use. Optical coupler isolation is used for input and output to enhance anti-interference capability and power consumption. Industrial grade circuit board, like PLC, ensure stability. Setting parameters after power off can be remembered forever and used more stably. The signal terminal can hold the voltage signal for a long time. Specification: Relay capability: AC 220V10A or DC30V10A Quiescent current: 20mA Working current: 50mA Service life: more than 100,000 times Working temperature: -40~85C Working voltage:DC 5V; 12V(Optional) Signal voltage: 4-20V Board color: Green Product dimension: 64.2mm*34.8mm*18.5mm Package list: 1 * Relay module Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product. The signal triggers the relay to pull in. When the time is up, the relay is disconnected during the delay. A: Invalid trigger again B: Re-trigger re-clocking C: Trigger relay reset again to stop timing The signal triggers the start timing time T1, and the time is up to the relay pull-in time T2 is disconnected (reset). The time of T1 and T2 is adjustable. Recycle: Turn on T1, turn off T2, and loop indefinitely. Both T1 and T2 are adjustable There is signal, the relay is closed, the suction is kept, the signal disappears, the timing starts, the time is up, the relay is disconnected, during the delay, the signal is given again, the delay is cancelled, the signal disappears, and the time is re-timed.