This item is made of highest quality materials and special technology in processing the electromagnetic parts which is durable and easy to use. It is suitable for office building, stainless steel doors, steel doors, wooden doors, fireproof exit doors, main access doors of community. So, why not have a look? Features: 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 striker, 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, ensure durable operation. The lock time is determined by the power-on time. Easy to install. Durable 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. Special design,easy to adjust the distance of the Lock-tongue. Specification: Item Type: Electric Strike Door Lock Material: Plastic Color: Silver Lock Size: 11 * 2.5 * 3cm/4.33 * 0.98 * 1.18inch Lock-tongue Structure: Zinc alloy die casting Holding Strength: 300kg thrust Voltage: DC12V Current: 12V/280mA ; 24V/160mA Special design: Adjustable Lock-tongue Suitable For: Wooden door, Metal door Surface 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 Package Weight: 233g/8.21oz Package List: 1 x Cathode Lock 2 x Screws 1 x Resistor .