Features: *This module uses MCU as the main chip. *High timer precision. *MCU watchdog circuit and special reset chip. *Stable and reliable work. Specification: T1(the relay turn on delay time), T2(the relay turn off delay time) Once mode (Jumper OP3) 1. The module Power-on, When triggered the relay is switched on, delay T1, and the relay disconneted. 2. When triggered on the delay process, again triggered, it will immediately interrupt the delay. Cycle mode(Jumper OP4) 1. The module Power-on, When triggered the relay is switched on, delay T1,and the relay is disconneted, delay T2, the relay is switched on again. Such cycle. T1 and T2 are set by two adjustable resistors, respectively. 2. When triggered on the delay process, again triggered, it will immediately interrupt the delay. Typical application reference 1. timer operating equipment, such as each press key trigger,when reach 5 minutes the automatic power off. 2. machine repeat test circuits, such as power 1 minutes on and then power off 1 minutes of ,such a cycle of testing. 3. fish tank pump intermittent pumping oxygen. 4. other timer control equipment. Package Contents:1*Trigger Infinite Cycle Delay Timer Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. This module uses MCU as the main chip. High timer precision. MCU watchdog circuit and special reset chip. Stable and reliable work.Specification:T1(the relay turn on delay time), T2(the relay turn off delay time)Once mode (Jumper OP3)1. The module Power-on, When triggered the relay is switched on, delay T1, and the relay disconneted.2. When triggered on the delay process, again triggered, it will immediately interrupt the delay.Cycle mode(Jumper OP4)1. The module Power-on, When triggered the relay is switched on, delay T1,and the relay is disconneted, delay T2,the relay is switched on again. Such cycle. T1 and T2 are set by two adjustable resistors, respectively.2. When triggered on the delay process, again triggered, it will immediately interrupt the delay.Typical application reference1. timer operating equipment, such as each press key trigger,when reach 5 minutes the automatic power off.2. machine repeat test circuits, such as power 1 minutes on and then power off 1 minutes of ,such a cycleof testing.3. fish tank pump intermittent pumping oxygen.4. other timer control equipment.Package Contents:1 Trigger Infinite Cycle Delay TimerNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.