A mini electronic timer built around the popular 555 Integrated Circuit. The timer enables the output when the power is applied to the circuit. The output is disabled it after the preset time interval. You can adjust the timer from a few seconds to the maximum of 10 minutes.
The output of the mini electronic timer can be used to drive a small load directly. For larger loads or high voltages, a relay should be used. The circuit will operate on 9 to 12 volts DC, and draws 20mA of current. A 9 volt battery clip is included.
This is an assembled and ready to use module. The mini electronic timer is also available in kit form. See related items below.