Features: Made of high quality zinc alloy, durable and stable performance Invisible remote control lock, specially designed for home security No keyholes outside, there is no way for thieves Tiger lock method, more safe and stable Touch design, it can be locked and unlocked by touching the lock body when indoors Support 3 unlock mode: Remote Control Unlock & Indoor Touching Unlock & Mobile Phone Unlock Super design and easy for installation Specification:Condition: 100% Brand NewMaterial: Zinc alloy Color: Golden, SilverOptional Type: A, B, C, DType A: Golden, no USB AdapterType B: Silver, no USB AdapterType C: Golden, with USB AdapterType D: Silver, with USB AdapterPower Supply: 2 * AA batteries (not included) Transmission Frequency: 433MHz(±500KHz) Operation Range: Within 20m Unlock Mode: Remote Control Unlock & Indoor Touching Unlock & Mobile Phone Unlock(need to buy USB Adapter Type)Package Size: 23 * 19 * 5.5cm/9.1 * 7.5 * 2.2inPackage Weight: Approx. 1050g/37ozPackage List:1 * Lock1 * Lock Box Bracket1 * USB Cable3 * Double Sided Adhesive Tape1 * Fixator4 * Remote Control Keys1 * Screw Set1 * USB Adapter(Optional)1 * User ManualNote:1. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.