Does the smoke alarm in the hotel flash red dots?

Yes, the smoke alarm has a red dot, which will flash all the time, and it needs to flash once every minute on average. The installation of smoke alarm can actually give an intelligent alarm when there is a fire in the stairs. Be sure to pay attention to the smoke alarm when installing it, and keep it slightly away from the kitchen.

Smoke detector is actually another name for smoke detector or smoke detector. Smoke detectors can prevent fire by monitoring the concentration of smoke. An ion smoke sensor is used inside. Ion smoke sensor is a kind of sensor with advanced technology and stable and reliable work. It is widely used in various fire alarm systems, and its performance is far superior to that of gas-sensitive resistance fire detectors.

principle

The infrared beam of the infrared emission tube is scattered by smoke particles, and the intensity of the scattered light is directly proportional to the smoke concentration, so the intensity of the infrared beam received by the photosensitive tube will change and be converted into an electrical signal, and finally into an alarm signal. The smoke sensing of the alarm is mainly completed by the optical maze, in which a group of infrared emitting and receiving photocells are installed, and the diagonal angle is 135 degrees. When there is no smoke in the environment, the receiving tube can't receive the infrared light emitted by the infrared emitting tube, and the subsequent sampling circuit has no electric signal change; When there is smoke in the environment, smoke particles enter the maze to scatter the infrared light emitted by the emission tube, and the intensity of the scattered infrared light has a certain linear relationship with the smoke concentration. The following sampling circuit changes, and the main control chip built in the alarm determines whether there is a fire alarm. Once the fire alarm is confirmed, the alarm sends out a fire alarm signal, the fire indicator (red) lights up, and the buzzer starts the alarm.

Matters needing attention

1. Press the test button for at least 3 seconds, and it will send out a crisp and loud pulse alarm signal.

2. This means that the detector really works, the LED flashes quickly and gives an alarm at the same time.

3. The detector can also be tested by blowing air into the detection cavity. (Do a test once a week to prove the reliable operation of the detector)

4. Do not install the ground with high temperature and humidity, otherwise it will affect the sensitivity.

5. In order to keep the sensor working efficiently, it is necessary to clean the sensor every six months. First turn off the power supply, then gently sweep away the dust with a soft brush, and then start the power supply.