With door close time delay function, will lock until the door completely stop moving, effectively protect the door and lock from damageSuperior low temperature design, safe and durable.The new structure optimization design, more stable and more secure. Ultra-low- design, more durable and more environmentally friendly. 500,000 times locks durability. Made from high-strength aluminum lock body, stainless steel . Operating Modes : NC (close when powered) Fail Safe. Suitable for wooden door, glass door, metal door, fireproof door, etc. Comes with fixing screws and all parts needed to fit as standard application.Lock is an important for maintaining families, nursing homes, schools and other places. choosing a good lock is equivalent to choosing safety and confidence. this solenoid valve lock can help you to solve all worries. it is durable and will not be easily damaged. it is convenient to install and is a good choice for you to watch your home.Specification:Item Type: Electric Deadbolt Drop LockOperating Mode: NC Fail Safe (close when powered)Feature: Low temperatureVoltage: DC 10V -18VInstantaneous current: 850mAWorking current: 85mATime : Time : 0 / 3 / 6 secondColour:SilverMaterial:Aluminum alloy + stainless steelSize:200mm*35mm*40mmPackage Contents:1 * Electric mortise lock1 * Instruction manual1 * Installation size sticker1 * Package of screw1 * Ordinary fixed board1 * Magnetic fixing plateOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.