Darshana Industries Pvt. Ltd. Supplies Electric Drop Bolt Lock. Darshana Industries Pvt. Ltd. Is an ISO 9001-2000 certified company engaged in the manufacturing of Plastic Moulded and Steel Components like Handles, Locks, Latches, Hinges, Leveling Bases, and Flexible Mountings. Electric Drop Bolt Lock comes with a standard voltage of 12 / 24 volts with door sensing enabled with a Delay Timer for Locking. Electric Drop Bolt Locks are used in various industries like Medical, Power Generation, Electrical Cabinets, Automation, Machine Tools, Conveyors, Consoles and Office Furniture.