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DC Timer


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More information is needed.

The ICM7555 can probably do this but a potentiometer will be needed to adjust the delay.

A microcontroller can be used to build a more flexible timing device but will need a voltage regulator (5V or 3.3V) and an output buffer to interface with the 18V devices.

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If you are handy with a soldering iron you can get a push button switch with potentiometer on ebay.  for example:


You would need to match the potentiometer on the switch with the one on the timer board.

You  could replace the potentiometer and switch on a timer board like this perhaps:


Look for one with the delay you need.

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