Features 1、High Security: Adopting invisible lock design to prevent being pried open, ensuring the security of homes and offices, reliable and dependable. 2、Smart Control: Support remote control remote unlocking, easy to achieve intelligent management and control, bring you a sensitive and modern experience. 3、Unique Design: The lock body can be cleverly hidden in the door, does not affect the aesthetics of the door, providing higher security. 4、Battery Powered: Built in battery installation slot provides stable power supply, eliminating the need for frequent battery replacement and saving time and effort. 5、High Adaptability: Door lock is suitable for various access control systems and lock types, perfectly meet your different places requirements. Specification Item Type: Electric Control Lock Material: Iron Lock Battery Type: Alkaline battery (Shipped without batteries) Lock Battery Model: AA Battery Battery Number: 4 Remote Control Distance: Approx. 010 meters/032.8ft Remote Control Battery Type: Alkaline battery (Shipped with built in battery) Remote Control Battery Model: 12V 27A Remote Control Battery Capacity: 25mAh Package List 1 x Lock1 x Lock Lug2 x Remote Control Key 9 x Screw  Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.