ELECTRIC LAMP ON/OFF SWITCHING DEVICE FOR DWELLING HOUSES AND OTHER BUILDINGS Russian patent published in 1998 - IPC

FIELD: electrical engineering; incandescent, fluorescent, and other lamps. SUBSTANCE: device is designed for handling lamps rated not over 250 V and supplied with power from 220 V, 50 Hz utility service mains to control illumination in dwelling houses, public and industrial buildings. It functions to automatically turn off lamps irrespective of personal factors as soon as user leaves premises wherein it is installed. Device can also function as limit switch. EFFECT: enlarged functional capabilities. 15 dwg