Features Rotating mode: after switching on, press and hold K1 for 2 seconds to enter the selection function mode, which can be selected from P1-1 to P1-4. Multiple functions: the time delay relay module adds power, prevents reverse function, outputs output optocoupler insulation, and improves interference-free power consumption. Industrial grade circuit board, set parameters after the power storage forever, ensure stability. Industrial grade plate with PLC level control. P1-2 OPERATING MODE: When the relay Y attracts to disconnect, the signal triggers the start time of the X time. The user can set the time at which the relay X and Y attracts, similar to P1-1. The blue light shows the time the relay is turned off, and the blue light off shows the time when the relay is turned off. P1-3 working mode: open for x seconds, Y seconds separate, infinite cycle. The user can set the time X and Y of the relay. The time setting is similar to P1-2. Press K1 to enter the fine tuning settings of this function, start X, turn off Y seconds, press K1, disconnect X, turn on Y seconds, and then press again to repeat the first default setting. P1-4 working mode: the signal trigger relay pulls, but does not start the timekeeping. The trigger signal disappears and starts with the time measurement T. When the time has elapsed, the relay closes; during the delay, the signal sounds again, the delay is canceled, the suction is maintained and the signal disappears. Restart the watch. Corresponds to the release of the start button and is often used for power delay. Specification: Item Type:Time Delay Relay Module Working voltage: DC 12 V. Static current: 20mA Working current: 50mA Signal source: positive trigger, PNP, high level effective Output capacity: can control DC30V 10A or AC250V 10A or less devices Lifespan: > 100,000 times. Package list: 1 x Time Delay Relay Module Package List 1 x Time Delay Relay Module