Introduce: 
This beautiful, rigid design digital keyless lock requires no key to function. Comes in satin steel finish with polished trim. Built with die-cast metal for durability. 
Features: 
-Waterpfoof seals protecting electronic components
- Backlit keypad for use in low light
- Up to 10 changeable codes including passage, user and master levels
- Deadlatch assembly with adjustable backset
- LED indicators for code entry
- Anti spy code encryption
- Low battery waring with emergency power jump override
- Suitable for indoor and outdoor - No external wiring required
- Comes with 4 X AAA batteries


Parameters: 
-Battery Life: 4PC AAA batteries, over 8000 times unlock
-Consumption: Static standby< 5μA; Dynamic< 150mA
-Temperature: -20 ~ +80 ºC
-Humidity: 20% ~ 95%
-Low Voltage Alert: 4.3V, allow 200 times when alert