Feature:1. Concealed remote control lock, specially designed for home security.2. For Tuya WiFi smart lock, supports remote unlocking of mobile phones, and can realize intelligent linkage with other for Tuya‑supported products.3. 2 kinds of unlocking / locking methods: mobile phone WiFi remote, remote control.4. The remote control password can be modified. Once the remote control is lost, you can modify the its password immediately, and the lost remote control is no longer valid.5. There is no keyhole outside, no opportunity for thieves, which is anti-theft, enhanced home safety.6. When the battery level is too low, the LED light flashes and an alarm sounds to remind you to replace the battery. When the power is used up, it will automatically unlock.7. Simple and convenient installation, no additional wiring is required.8. Made of premium zinc alloy material, sturdy and stable.Specification:Item Type: Remote Control LockColor: As picture ShownHost:Power Supply: 2 x AA Batteries (Not Included)Transmission Frequency: 433mhz (± 500khz)Operating Range: Within 20 Meters/65.6ftUnlock Mode: Remote Control Unlock, Mobile Phone Wifi Remote UnlockMaterial: Zinc AlloySize: Approx. 15.5 x 8 x 3.5cm/6.1 x 3.1 x 1.4inRemote Control:Single Remote Control Battery: 1 x CR2032 3V (included)Quantity: 4 (Included)Maximum Number of Controllers: 16 (Not Included)Function: Lock and UnlockColor: SilverSingle Remote Control Size: Approx. 6 x 3 x 1cm/2.4 x 1.2 x 0.4in.Package List:1 x For Tuya WiFi Remote Control Lock1 x Wifi Adapter1 x Lock Body Bracket1 x Buckle4 x Remote Control1 Pack of Mounting Screw1 x USB Cable3 x Fixed Tape1 x Instruction