General description Made of solid ABS material, this 3X Combination Lock offers precise and safe access control. It features a contact keyboard password lock that requires a key for operation, making it a reliable choice for various applications including schools, gyms, hotels, and homes. Technical specifications Material: ABS Color: Black Size: 95 x 33 mm Maximum installation thickness: 20 mm Battery: Button battery (included) Package Contents: 3 x Code Security Lock, 3 x Panel, 3 x Nut, 3 x Screws Measurement allowed error: +/- 1-3 cm Installation Ensure the installation thickness does not exceed 20 mm. Use the included screws and nuts for secure installation. Usage Factory state management password: 1234. To unlock, enter the correct password; the green indicator light will turn on. If the password is incorrect, the lock will sound an alert. Temporary passwords can be set for one-time use. The lock enters standby mode, indicated by a flashing light every 3 seconds.