Item NO.:  M002
Material:    zinc alloy/plastic,2 options
Size:          85*56*14mm
Color:         as shown
Power supply: 4pcs AAA 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.

popular one with stable quality.
two working modes in one lock ,suitable for both public and private cabinets.
(terporary code mode=public mode ,permanent code mode=private mode)