The delay time is adjustable between fifteen seconds and ten minutes. There is an LED to indicate operation, and there is an AC output to attach to whatever you wish to control. When the timer runs out, it will switch off whatever is attached. Repressing the switch will extend the ON time. Think of this as a start stop timer maybe for your work shop vac or other device that needs to be turned off after each use.

Technical Specifications:

Mains Voltage: 110  125 VAC or 220  240 VAC (jumper selectable)

Max Load: 500W

Delay time (without modification): adjustable from 15 seconds to 10 minutes.

LED indication for operation

PCB Dimensions: 3.22 x 2.23 inches.

CONNECTOR and TUNING

SW point is used to connect the power switch, to start the timing process

AC IN point is used to connect the mains voltage 110  125 VAC or 220  240 VAC

AC OUT is the mains output voltage when the timer is active. NOTE: This circuit uses mains voltage 110  125 VAC or 220  240 VAC, before testing and adjusting you must disconnect the power every time!!

Requires no external power source (no wall wart) except the mains of course.