Suitable for office building, stainless steel doors, steel doors, wooden doors, fireproof exit doors, main access doors of community. Mortise mounted, beautiful outlook, large lock , and wide range of application. Embedded installation,made of highest quality materials and special technology in processing the electromagnetic parts. Can customize special lock according to your demand. Without residual magnetism for long time working, operation. The lock time is determined by the power-. Easy to install. and easy to use. Double unlock mode: switch up, power off/ NC, switch down, power on/ NO High strength and high hardness.,made of thick stainless steel with built-in copper coils. ,easy to adjust the distance of the Lock-tongue. Item Type: Electric Strike Door Lock Lock-tongue Structure: Zinc alloy die casting Holding Strength: 300kg thrust Voltage: DC12V Current: 12V/280mA : Adjustable Lock-tongue Suitable For: Wooden door, Metal door Temperature: Lower than room temperature +20 Suitable Temperature: -10~+55C(14-131F) Suitable Humidity: 0~95% Lock body treatment: High temperature Security Type:power off to lock Colour: silver Material: metal Size: 11 x 2.5 x 3cm Package Contents: 1 x electric lock for door Only 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.