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
1. The module Power-on, When triggered the relay is switched on, timer delay off.
2. When triggered on the delay process, again triggered, it will immediately interrupt the delay.
 
Cycle mode
1. The module Power-on, When triggered the relay is switched on, (T1) timer delay off. (T2) timer delay on. 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, such a cycle of testing
3. fish tank pump intermittent pumping oxygen.
4. other timer control equipment.
 
Performance
Jumper OP1: 1 to 90 seconds, 0.1 seconds of regulation accuracy
Jumper OP2: 1 seconds to 15 minutes, 1 seconds of regulation accuracy
The time delay error of all kinds of temperature and humidity is not more than 2%.