The ventilation fan and central air conditioner of the hotel are unified. There will be switch buttons of these two things and the switch of the light next to the room card when entering the door. The logo of the ventilation fan is a small fan.

The principle of power taking by card in hotels is that the power taking equipment is designed with the help of light reflection, and the resistance of photosensitive rheostat changes with the intensity of light. For example, there is always an infrared emitter in the card switch. When the card is inserted, the infrared ray is reflected by the card to the photosensitive rheostat, and when the photosensitive rheostat meets light, the resistance decreases, so that the circuit is connected, and the call is made.

in order to standardize the hotel's electricity consumption behavior and ensure the personal safety of hotel employees and guests, the hotel's safe electricity consumption management system is formulated with reference to the information in China Eating Net Catering Database:

1. High voltage, low voltage, power generation and distribution room are the key parts of the hotel, and non-professionals are prohibited from entering.

2. Smoking, naked flame, meeting guests and slapstick are strictly prohibited indoors.

3. It is forbidden to store and use inflammable, explosive and irrelevant articles indoors. Fire fighting equipment should be checked at any time and kept in good condition.

4. The personnel on duty are forbidden to drink alcohol before taking over and at work. They should strictly observe their posts and watch, listen and patrol frequently to ensure the safety of power supply.

5. When switching, the personnel on duty must be operated by one person and supervised by one person, and a working ticket and record must be established before operation.

6. When sending electricity, the person in charge of electrical inspection and maintenance must apply for sending electricity. The person in charge of the electrical appliance should ask whether to remove the relevant accident matters and think that it meets the power transmission requirements before sending power.

7. It is forbidden to send power or cut off power at an appointment, and it is forbidden for non-electricians to give instructions to stop and turn off power.

8. The telephone on duty should be kept open at all times.

9. Inspect the line equipment once every quarter, and repair it in time when problems are found. Lightning rods must be tested once before the rainy season, and electrical equipment should be thoroughly inspected on major holidays such as May 1st, October 1st, New Year and Spring Festival.