Wholesale PIR Door Sensor Switch Manufacturer

Everyone has had the experience that the lights in the corridor will turn on automatically when passing through the corridor without doing anything. Do you know why? This is because the PIR switch is applied. In this article, let's explain to you that why the light turns on automatically.

How do PIR switch works?

PIR is the abbreviation of passive infrared ray. The main equipment inside PIR switch is PIR sensor. The human body has a constant body temperature, generally at 36-37 degrees, so it will emit infrared rays of specific wavelengths. The passive infrared probe works by detecting the infrared rays emitted by the human body. The 9.5um infrared emitted by the human body is enhanced and gathered on the infrared induction source through the Fresnel lens. The infrared induction source usually adopts pyroelectric elements. This element will lose the charge balance and release the charge outward when receiving the change of the infrared radiation temperature of the human body. The subsequent circuit can trigger the switch action after detection and processing. If the person does not leave the sensing range, the switch will be on continuously. After the person leaves or there is no action in the sensing area for a long time, the switch will automatically delay to close the load.

Types of PIR switch

According to ways of installation:

1. Wall type human body induction switch
2. Ceiling type human body induction switch

According to wiring mode:

1. Single line human body induction switch
2. Two wire human body induction switch
3. Three wire human body induction switch
4. Four wire human body induction switch

Other applications of PIR switch

The most common application of PIR switch is some public places such as stairs, walkways, toilets, elevators and etc,. Except these public places, PIR switch also applied in many other scenes.

• For meeting rooms, office areas, toilets and basements. It is able to turn on when people arrive, and to turn off when people leave, which greatly avoids waste, saves energy for you and keeps you from forgetting to turn off the light.
• For disinfection room. When people come, they automatically turn off the disinfection equipment. When people go, they automatically turn on the equipment. Escort your health.
• For hotels, guesthouses, etc. Instead of the existing plug-in card, it can also monitor the dynamics of the room. When people come, turn on the power automatically, when people go, and turn off the main gate automatically. It is very humanized.
• For bedroom. It can slowly dim the light, then turn it off, or slowly turn it on.
• For air conditioner. When you sleep at night or go out during the day and forget to turn off the air conditioner, it will "monitor" all this and send a signal to your air conditioner.
• For school and community corridors and garages. It can make people come all bright and people go half bright. On the premise of ensuring safety, it can greatly save energy.

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In the end

PIR sensor switch has many merits, thus it has developed rapidly. With professional and mature technology, NINGBO TECHNIC LIGHTING is absolutely a reliable PIR sensor switch manufacturer. Any interest, welcome to contact.

Wholesale PIR Door Sensor Switch Manufacturer