Smart Front Door Deadbolt Keyless Locks .

SPECIFICATIONS   Brand Name: hornbill   HORNBILL Model: HB-M1   Ways To Unlock: Mechanical Keys Ways To Unlock: Password Ways To Unlock: bluetooth Ways To Unlock: APP Smart home platform: other Smart home platform: Alexa Smart home platform: Google Assistant Fit Door Thickness: 38mm~48mm(1.5" ~ 1.88") Power Supply: DRY BATTERY Suitable Door Type: Wooden Door Suitable Door Type: Brass Door Suitable Door Type: Stainless Stell Door Suitable Door Type: Steel Door Suitable Door Type: other Connectivity: bluetooth Certification: FCC Special Features: Support Gateway Model Number: HB-MD Finish Type: Powder Coated Handle Direction: Direction Reversible Protection Level: IP66   Preparation Guide for Door with Existing Holes: https://i.goopics.net/a2jo4o.jpg Note: (US Standard) Before you buy, please note: this lock is only for the door thickness is between 38mm(1.5 inches) ~ 48mm(1.88 inches) . Battery Requirement: 4PCS AA batteries (not included). Unlock Method: TTLock APP control & Passcode & Mechanical Key & Bluetooth. Remote Voice control with Alexa and Google Assistant (need a G2 gateway). The following videos for your reference: 1. How to Install Hornbill Smart Lock：https://youtu.be/P_Is0bnf-zQ 2. How to Set up TTLOCK app for Hornbill Smart Lock: https://youtu.be/eEfsjfncLaw 3. How to Use Alexa to Control the Hornbill Smart Lock: https://youtu.be/btTkTbb9siI