This setting appears elsewhere in this section. This was obtained from Texas documentation from the 90s. The activation time is given by R1 and C1 and in this case it is in the order of a few minutes.
With a touch of the sensor wire X1, which can also be a pressure switch, the LED lights for a time...
This alarm with automatic shutoff was found in the April 1975 Radio Electronics magazine. The...
This Colpitts crystal oscillator was found in an American publication for amateurs in the 1980s....