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A. hotel card key lock System Construction
Douwin set of locks, computer, management software, Encoder, RF card , energy saving switch

B. Multiple functions

1. Five levels of control: General control, building control, floor control, area control and room control.
2. Password control: System password and operating password together to ensure security.
3. Cipher coding to key card: Each card has a different code that cannot be copied. Compulsory decoding will destroy the card automatically.
4. Area control: Cards of different types and levels can open different locks in different locations.
5. Timing control: Working clock is set inside locks to control the effective time limit of card keys.
6. File record: All issued card keys have records including each opening(also mechanical key opening)
7. Loss reporting: Open function can be cancelled when the card is missed.

C. Strong compatibility and expansiveness

The system can be run above WINDOWS 3. 1 operating system. In provided with strong expansiveness, it can link with the hotel management system. The system is in kind system interface which is easily operated.

Basic Technical Functional Index:
1. Power Supply: DC6V, use of 4 pieces of No. 5 (or No. 7) AA batteries, with lack of voltage indications.
2. Static Power Supply: <1u A>
3. Dynamic Power Supply: About 200mA
4. Lifetime of battery: For the allowed door open times, it normally can exceed 10, 000
5. Inductive Distance: 3-10cm
6. Record inside the lock: 512 lines for standard type, exceed 1, 000 lines for special demand
7. Setting Requirement:
Working temperature -20'C~70'C, humidity: 98%max.
8. Anti-static Electricity: Totally closing status, the problem of static electricity is resolved.