Features: 1.12V voltage electric control, super sensitive, quick response, convenient to unlock. 2.Using high?quality iron powder, it is strong, corrosion?resistant, rust?proof and durable. 3.Ultra?high safety performance, effective anti?theft, low failure rate and reliable use. 4.Wide application range, suitable for all kinds of iron doors, wooden doors, etc. 5.Easy and fast installation, does not require complicated operations and tools. Specification: Item Type: Electric Control Lock Material: Iron Powder Voltage: 9-12V Installation Method: Left reverse How to Use: 1.Installing the lock with matching screws generally requires that the lock body, lock head, and buckle shell be fastened to the door edge and frame, and the distance between the tongue surface of the lock body and the tongue surface of the buckle shell is about 5mm. 2. Observe whether the weight of the door and the door closer (if equipped) are ideal. When the door is closed, the noise is loud or it is not locked. You can use a No. 12 wrench or pliers to turn the hexagonal screw angle. Repeatedly adjust the load spring until it is tight and balanced when opening and closing the door 3. When the hook and oblique tongue is installed reversely, the inner unlocking can be changed to the outer unlocking, and the installation method is the same. 4. Connect the lead wires at both ends of the lock to 9-12V AC and DC power supply, power> 12W. Then press the unlocking control switch, just press for 1 second, the lock will automatically open. PackageList: 1 x Lock Body 1 x Lock Catch 1 x Installation Accessories Pack 1 x Lock Head 3 x Key