General description Made of durable ABS material, this 4X Combination Lock is designed for security and precision. It features a contact keyboard password lock that requires a key for access, 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: 4 Coded Security Locks, 4 Panels, 4 Nuts, 4 Screws Measurement allowed error: +/- 1-3 cm Installation Ensure the installation surface can accommodate a thickness of up to 20 mm. Use the provided screws and nuts for secure installation. Usage Factory state management password: 1234. To unlock, enter the correct management password followed by the OK button. For setting a temporary password, press the OK button, enter the desired password (4-15 digits), and press OK again. The temporary password is valid for one use only and will become invalid