4 in 1 unlock --- Supports 4 kinds of unlocking methods, Bluetooth APP, password, card, and key. Provide a variety of door opening modes to improve the security of door locks.

Virtual Password --- When unlocking with a password, you can add multiple incorrect digital before / after entering the correct password. Virtual password function effectively prevents password leakage and guarantees family safety.

Remote unlocking --- Cooperate with for TTLOCK gateway to realize remote unlock management (gateway needs to be purchased by yourself). When a guest visits, even if you are not at home, you can open the door to the guest through remote unlocking, which is very convenient.

Temporary password --- You can use the mobile APP to generate a temporary password for unlocking. After unlocking, the password becomes invalid. You can also view the unlock record at any time through the APP.

Easy to install --- Easy to install, any wooden door with an old mechanical lock can be retrofitted. Has the function of low battery alarm, no worry about the using time of lock.