Made of ABS material, strong, accuracy, safe and durables in use.Contact keypad password lock, no keys needed. Cool to use.Factory state: Management password: 1234, default home mode, When the green is unlocked, the indicator light will be on, and if the password is wrong, it will sound.Applicable to agent, school, SPA/sauna bath center, swimming pool, gymnasium,golf course, supermarket, hotel, company, factory, household, business clue etc.Battery:button battery (included)Instructions:Enable public mode1. Enter the correct management password "****+OK" key, the buzzer "di..." a long beep, the unlocking light is always on.2. Press the OK button again for more than 2 seconds, the lock flashes, press the OK button again.3. Enter the numbers "4, 4" and press the "OK" button, "di .." a long beep.Set temporary password1. Press the OK button, the unlock indicator flashes.2. Enter the 4~15 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 it will automatically become invalid after use.Turn off public mode1. Enter the correct management password "+OK" key buzzer "di..." a long beep, the unlocking light is always on.2. Press the "OK" button again for more than 2 seconds, the lock flashes, press the OK button again.3. Enter the numbers "4, 3" and press the "OK" button, a long beep "di...".Maximum installation thickness: L = 20mmColour: blackMaterial: ABSSize: 95 x 33 mmPackage Contents:1 * Code Security Lock1 * Mounting panel1 * Mounting nut1 * Mounting screwsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.