The OldArc DC12V Electric Bolt Lock is a high-tech access control solution designed to provide maximum security and convenience. With its adjustable time delay, self-locking feature, and fail-safe mode, this lock is the perfect choice for anyone looking for a reliable way to secure their home or business. The lock operates at a working voltage of DC12V and has a working current of 1.2A (start-up) and 0.25A (operating). The coil type is continuous working and the lock uses a magnetic induction for locking and unlocking.When 12/24V is applied to the lock, the bolt lock is on standby until the door lock and pin casing is aligned and that triggers the magnetic sensor to release the pin into the pin casing to secure the door. Adjustable time delay allows you to set the lock to automatically lock after a certain amount of time, giving you added peace of mind. The self-locking feature ensures that the lock will always be secure, even if you forget to lock it manually. The fail-safe mode ensures that the lock remains Unlocked in the event of a power failure. This lock features a 12.5mm diameter stainless steel spring bolt with an extended length of 15mm, ensuring maximum durability and reliability. The lock can be locked and unlocked using power, and it has a magnetic sensor for auto lock. The lock's weight is 500g and it measures 150mm (L) x 34mm (W) x 28mm (H). The OldArc Surface Electric Bolt Lock is easy to install and is compatible with both wooden and metal security doors. The lock has a sleek and modern design that will complement any decor. The lock's red wire is for power supply (+), the white wire is for COM, the black wire is for power ground (-), and the yellow wire is for NC. The lock has an adjustable time delay of 0, 3, or 6 seconds (factory setting: 0) and can be locked using power and opened without power. Whether you're looking for a reliable access control solution for your home or business, the OldArc hanging Electric Bolt Lock is an excellent choice.