| This circuit measures the power consumption of typical loads such as lamps, household appliances, and heaters. It features an LED bar and an...
Giuseppe La Rosa (3)
| This device was mainly designed for household appliances dealing with water. In the event of a leak — when a hydro-sensitive sensor is wet —...
| A twilight switch is a useful device that turns a lamp on at dusk and off at dawn. Some lamps have this included, but, if not, you can build...