Black Keyless Smart Door Lock, Entry & Digital Deadbolt Gate Locks Electronic Security Lock with Battery for Family, Hotel & Flat

If the power is less than 4.8V, locking sound and light turns on when the door is opened with a card.

Please replace the battery in this case.

If the lock is power off, the door will be not lock until you replace the batteries : There are multi ways to unlock the door, such as password, RFID card unlock, and improve the safety.

Thieves and strangers are hard to invade your home and boardcase, and protect the fragile and treasure things : High-strength Zinc alloy, Virtual password function, the intelligent gate lock keep all the data from loss due to power failure : Public mode and private mode in one lock, you can change in conformity with your own requirements, suitable for both fixed and public users.

The intellighent lock is ideal for the home and office, gym, cabinets, lockers, cupboards, medical carts, data racks, gun boxes, safes