1. The lock is made of pure-copper or stainless steel and is very durable. 2. Adopting siemens encryption techniques, which is counterfeit-preventing. 3. Door-unlock-warning: this can warn the user and ensure100% security. 4. Can register 255 exclusive user cards and support offline network function. 5. Can work with li battery, charged by a charger, no need to change battery. 6. Ic card can realize the independent locking for hotel or household. Electric parameters: Input voltage: dc6v Static current:
