The product's unlocking function's update

The combination lock,ZT403,with Camper Trailer Wireless Control Metal Latc, previously had four unlocking functions：fingerprint, Mechanical Key password and remote control.

While maintaining the original four unlocking functions of this combination lock, our designers have also developed an APP unlocking function. As long as you download an APP on your phone and connect the Bluetooth, you can operate the switch lock on your phone.