Function and characteristics
1. Users can set single or double card randomly
2. Power supply: There are 4 PCS 1.5V alkaline batteries.
3. Every time opening the door by card when voltage below 4.8V and the lock will alarm
4. Battery life: 15 months
5. There is external power supply on the lock
6. The door resiles automatically, open by card, the door resile automatically
7. Under the abnormal conditions, use mechanical equipment to open
8. The movement of gear constitution, safe and reliable.
9. Watch card, portable, waterproof, antiseptic
10. Opening method: TM/EM card, eradicate misuse
11. Temperature: -30 degree~80 degree