Item NO.: M922
Material: stainless steel
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.
This lock with three-level management.
*The first level is master card. ( only 1 master card can be programmed)
*The second is management card and management code, maximum for card and code is 3 and 1.
*The third level is user code, temporary code, user card or user card plus code.
You can only choose one from these four ways to operate.