DO IT YOURSELF ENTRY --- PURPOSE: To enable an individual with limited mobility to lock and unlock an entry door remotely. A door-lock solenoid from a car was mated to a standard dead-bolt. Power was connected through a momentary contact, center-off, double- throw switch that was wired to reverse the power polarity as it was moved up/down. This operated the solenoid in both directions. The switch was placed in box that was placed beside bed. The car-lock solenoid can be operated manually if needed. POWER: Uses a standard 12-volt direct current power adapter. TITLE: The Remote Door Lock. WEB SITE: Workshop Solutions at http://www.workshopsolutions.com/COMPLETE/doorlock.htm. REF: The originator, Doug Brown, can be contacted at email@example.com.