This is a stainless steel electronic lock that combines mechanical and electronic unlocking functions. It is compatible with 12V/24V DC power and is commonly used in building access control or entrance door security applications. It features a robust metal casing and supports both recessed and surface mounting, fitting various door types including hollow doors. The lock comes with a complete set of installation accessories and a mechanical key, supporting both remote electronic unlocking by the access control system and manual unlocking with a key in case of power failure or emergency, balancing convenience and security.