What is the principle of hotel automatic temperature alarm?

The temperature sensor is used to detect the external temperature in real time. When the temperature exceeds or falls below the critical value set by the user, an alarm is given to the outside world.

The temperature alarm can be externally connected with various alarm devices, such as directly using audio and warning lights, or connecting the network to send alarm information or real-time temperature information to users.

Smoke alarm, also known as fire smoke alarm, smoke sensor, smoke sensor, etc. The power supply is supplied by the bus, which can be connected with multiple buses to form an alarm system and communicate with the fire alarm controller through networking. There is no sound at the scene when the alarm is given, and the host has an audible and visual prompt. This kind of smoke alarm device is generally called smoke detector. Smoke detectors are divided into areas with and without address codes.

From the internal principle, the smoke alarm realizes fire prevention by monitoring the concentration of smoke. The smoke alarm adopts ionic smoke sensor, which has 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 alarm.

It has radioactive source americium 24 1 in the inner and outer ionization chambers, and the positive and negative ions generated by ionization move to the positive and negative electrodes respectively under the action of electric field. Under normal circumstances,

The current and voltage in the inner and outer ionization chambers are stable. Once there is smoke, the ionization chamber outside will disappear quickly. If the normal motion of charged particles is disturbed, the current and voltage will change, which will destroy the balance between the inner and outer ionization chambers. So the wireless transmitter sends out a wireless alarm signal to inform the remote receiving host and send alarm information.