The lock''s size is 100mm L x 30mm W x 35mm H (4" X 1.2" X 1.4"). The EM-1200 is patented in the U.S., Taiwan and China and the relock facility is actuated by sensors with up to 100 retries. The adjustable time delay is from 0 to 30 seconds, and the EM-1200 is equipped with a position and lock sensor and is microprocessor controlled.