This is a high-performance timing module, convenient and practical for users.Features: New updates to simplify and meet user needs.Increases the anti-reverse function of the power supply.LED numerical display, intelligent control, delay/time relay function. The use of isolated logic inputs and outputs, improved capacity and anti-interference consumption.Setting parameters can be saved at the end after shutdown. Power saving function, a key switch, can turn off the screen.To ensure stability, industrial grade circuit board.Mode selection: After power on, press K1 for 2 seconds, then mode selection: P1~3.P-1: monostable trigger delay, a signal to the trigger relay, time out, relay turned off;P-2: A signal is triggered and the countdown begins, T1 seconds later, the relay opens T2 seconds, then closes P-3: open T1 seconds, separate T2 seconds, endless loop.User can set relay time T1 and T2;Features: Display: LED digital display Voltage: DC 12V Time range (programmable): 0 ~ 999.9 seconds;0~9999 seconds;0~9999 minutes Relay specification: DC 5~30V 10A or 10A 220V AC Static current: 20mA Working current: 50mA Operating temperature: -40~85°C PCB size: 65*38*18mm/2.56*1.5*0. 7in (L * W * H) PCB Weight: 26g / 0.93oz Package Size: 11.5 * 7.5 * 2cm / 4.53 * 2.95 * 0.8in(L * W * H) Package List: 1 * DELAY Timer If you have any questions, please contact us quickly.