Keyless lock wafu - keyless security lock controls invisible with 4 remote control silver Superimpose invisible lock with remote control operated security. This lock, implements intelligent power management. It is designed for use with batteries, power supply DC5V USB cable and also both simultaneously. It gives you security and peace of mind knowing that it is impossible to force from the outside and will not leave your door blocked by an electrical fault. Keyless Lock can be installed on any door, window, cabinet, vehicles, etc. It can be fixed by screws or rivets on wood or metal doors, extra strong adhesive and glass doors. It works by remote control which opens and closes without a key, this makes it invulnerable against theft with master key.