NE555 Timer Switch Adjustable Module Time Delay With Relay DC 12V

Power relay delay pull. Specifically: 12v power supply to the relay, the relay will not immediately sucked and status relay outputs areĀ  normally open disconnected public,normally closed and public conduction,wait until the delay 1-10s (adjustable),the relay suction and, this time, the relay output status is: normally open and public conduction,normally closed and public disconnected; as long as uninterruptible power module, this state will remain.
The delay time is adjustable(0 to 10 seconds)
Increasing the potential can increase the delay time
Increasing the capacitor C1 can increase the delay time
With input power indicator
With relay indicator
Can control AC 220V / 10A about equipment. (Maximum control equipment 2000W)
With freewheeling protection relay.
The delay time formula: T = 1.1RC. For example: a resistor capacitor 100uf 100K
T = 1.1 * 100000 * 0.0001 = 11 seconds