1. Adjustable delay 2. Smart circuits 3. Stainless steel tongue 4. Aging qualification test 5. Non-slip and wear-resistant, durable 6. Surface sandblasting and wire drawing process 7. Hexagon socket head screw, fixed panel, more secure against theft 8. Power-off unlocking circuit design, once locked, the deadbolt will not rebound unless power is off 9. The copper coil has very good conductivity, which can effectively exert electric energy, reduce losses and dissipate heat quickly 10. Working voltage: 12V 11. Current: start: 1.2A, work: 0.25A 12. Dimensions: 23x147x39mm