Digital Door Knob,Keyless Entry Door Knob,Smart Knob Unlock by Passcode/USB Backup,Exterior Door Lock with Keypad,Security Door Lock Electronic Door Knob for Home Office Bedroom Hotel Apartment,Black Made of 100% polyester material

Made of 100% polyester material

Jaw Caliber Size 1

Two-Way Audio and Wifi Connection】CHORTAU wireless camera surveillance comes with the built-in microphone and speaker

If you want to further amplify your audio

1*instruction manual and so on

Digital Door Knob,Keyless Entry Door Knob,Smart Knob Unlock by Passcode/USB Backup,Exterior Door Lock with Keypad,Security Door Lock Electronic Door Knob for Home Office Bedroom Hotel Apartment,Black Made of 100% polyester material[CONVENIENT UNLOCK MODES]Keypad knob supports 2 unlock modes: passcodes and USB backup. The number of available passwords equipped with the keyboard : 100. The door lock is equipped with a USB emergency power interface. When the battery runs out, you can connect the power bank to open the door. The keypad door lock operates on 4 AAA batteries(not included) that will last up 1 year. [MULTI FUNCTION]Admin&User mode: Convenient password management for