Cerradura digital de combinación simple para puerta corredera, sin llave (negra)

Mechanical operation, no batteries or external power required, waterproof. Unlock using a button combination (no key or card required). The combination can be changed on the front or back of the lock body. There are no restrictions on the order of the unlocking combination. For example, if the combination is set to 12345678, then 87654321 will also unlock. Always press the "C" key before unlocking. Suitable for left-hand and right-hand doors. Suitable for door thicknesses: 35 mm to 55 mm. Easy installation, no keyhole required, installation template included. Note: Ensure all parts are functioning correctly before installation. Do not overtighten the mounting bolts, as this may cause deformation and affect operation. Do not close the door until you have confirmed that the combination and locking mechanism are working properly. Includes a complete set of screws.