Electronic hidden drawer lock NFC-enabled for cabinet and locker useThe latch and socket are made of metal, strong enough for privacy and security After it is turned on, it will emit a long beep and display the low battery status as needed, and can be used about 15 times after that.<br> When the battery is too weak to operate, the door will open automatically, at which point the battery must be replaced before the lock can be used again.<br> no drilling required.<br> Easily fixed with screws.<br> Powered by 4 AAA alkaline batteries (not included), lasts for with normal use an penetrate thicker boards (up to 38mm/1.5 inches).<br> Fits wooden doors up to 0-1.2 inches thick, great for cabinets, drawers, lockers, cupboards, wardrobes, medical-carts, data racks, boxes, .<br> Power Suplly:4 AAA batteries(Not included batteries) Colour:White Material:Metal+Plastic Package Contents: 1 * drawer lock 1 * installation package 1 * proximity card Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing.<br> The measurement allowed error is +/- 1-3cm.