A. Hotel RF card door lock System 
DouWin Temic card locks, computer, management software, Encoder(To issue all the cards by software), Temic card or mifare card.

Energy saving switch(Only accept 125KHZ RF cards to gain the power in room).

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.

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: 256 lines for standard type, 7. Setting Requirement: Working temperature -20º C~70º C, humidity: 98%max
8. Anti-static Electricity: Totally closing status, the problem of static electricity is resolved