This circuit is from a 1980s Motorola documentation. The circuit can be made with modern equivalent components. The original circuit is for the 115 Vac (110 V) grid and has two settings.
The contact of the sensor with water or humidity causes the relay to close its contacts. The...
This siren was found in a 1980s documentation. The circuit makes use of very old operational that were...
This circuit was obtained from Motorola documentation from 1969. The setting applies to other...