Item NO.:  M015
Material:    ABS
Size:         90*76mm
Color:         black/white
Power supply: 3pcs AA batteries
Battery life:  10-12 month.
Low voltage alarm function: voltage lower than 4.8V
External power interface: yes
Working temperature:   -20 ℃ ~ +65 ℃ 
Working humidity: less than 98%RH
Lock body material:fire rated plastic.

Features:
embedded installation, nice-looking from front