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Note: use the product before, please install AAA battery. 2: receiving the product, it is found product has been locked or cannot be unlocked. Please use power emergency unlock function (connecting the power cord, press and hold H and M buttons at the same time to unlock ). power cord no charging function, only use emergency unlocking function. 3: If you need to unlock during the operation, please contact the seller to obtain the level 1 emergency unlock function. Battery installation Tear off the sticker on the cover and find the battery holder, Open the back of the cover and install two no.7 battery, the LCD screen will Show the number, (When the LCD screen does not display numbers, do not pull out Pushpin, otherwise the lid cannot be opened) Mode switching Press and hold the S button for 3 seconds to switch between silent and non-silent modes,A beep is heard. How to open the box Press the M and H buttons at the same time to open the lid and clear the number to "0" Set target time to unlock Press the H button to set the hours, press the M button to set the minutes, put in the time lock box, and then press the S button to count down. Press and hold the button continuously for quick setting. How to start locking the box Press the S button to start the countdown, and the LCD will leave an extra 5 seconds. Note: Countdown within 5 seconds, you can press any button to stop And cancel the setting. After 5 seconds, the timer will start counting down. When the H and M buttons are pressed, the lid cannot be opened. LCD display logo "Lock", after which the lid cannot be opened. You need to wait for the time count, The lower end is then automatically opened, and the LCD displays "LOCK"