A. Made of ABS material, strong, accurate, safe and durable in use. Contact keypad password lock, no keys needed. It is cool to use. B. Factory state: Management password: 1234, default home mode. When unlocked, the green indicator light will be on, and if the password is wrong, it will sound. C. Applicable to agents, schools, SPA/sauna bath centers, swimming pools, gymnasiums, golf courses, supermarkets, hotels, companies, factories, households, business clues, etc. D. Battery: button battery (included). E. Instructions: Enable public mode: 1. Enter the correct management password "****+OK" key, the buzzer will make a long beep "di...", and the unlocking light will stay on. 2. Press the OK button again for more than 2 seconds, the lock will flash, then press the OK button again. 3. Enter the numbers "4, 4" and press the "OK" button, a long beep "di .." will sound. Set temporary password: 1. Press the OK button, the unlock indicator will flash. 2. Enter the 4~15-digit password to be set. 3. Press the OK button, the buzzer will beep for a long time, and the lock will be opened and stored. The temporary password is set successfully. After entering the standby state, the light of the electronic lock will flash every 3 seconds. *The temporary password can only be used effectively once and will automatically become invalid after use. Turn off public mode: 1. Enter the correct management password "+OK" key, the buzzer will make a long beep "di...", and the unlocking light will stay on. 2. Press the "OK" button again for more than 2 seconds, the lock will flash, then press the OK button again. 3. Enter the numbers "4, 3" and press the "OK" button, a long beep "di..." will sound. F. Maximum installation thickness: L = 20mm. G. Colour: black. H. Material: ABS. I. Size: 95 x 33 mm. J. Package Contents: 1 * Code Security Lock, 1 * Mounting panel, 1 * Mounting nut, 1 * Mounting screws. Only the above package content is included, other products are not included. K. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.