Model Number: T21
Brand Name: YRHAND
Material:: 304 stainless steel
Color: Silver, Black, Red bronze
Unlock method: App, code, Card, key
Door Thickness Request: 38-50 mm,if over 50 mm,please contact us
Working Voltage: 4 pcs 1.5V LR6 alialine batteries
Lower Voltage Warning: less than 4.8V(50 times at least)
lockKey: 2 pcs Mechanical Keys
Application:: Interior Door
Bluetooth standard: Android 4.3/IOS.0 above
App name: TT lock
Handle direction: support right and left door