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Dogface PIR Sensor Switch
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OEM:
Available
Sample:
Available
Port:
Ningbo
Payment:
T/T,L/C
Place of Origin:
China
Supply Ability:
800000 piece per month
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Advantages of PIR Sensor Switch

 

 Firstly, As long as the person is in the sensing area, the switch can be kept on continuously. Once the person leaves, the time will be turned off, the function is quite human, and it is safe and energy-saving. 

 

Secondly, it is also different from voice control or other sensor lights, because it does not require sound to avoid the trouble of voice control noise, and since it is a switch that senses the body heat, thus avoiding the loss of invalid power. 

 

Lastly, And the probe of the PIR motion sensor light itself does not emit any type of radiation, and there is no problem of radiation.

 

 

FAQ

 

1.May I have a sample order ?
Yes, sample order is available.
2. What about the lead time?
The lead time of sample is 5-7 days, the delivery time of order is 7-45 days.
3. Do you have any MOQ limit for order?
Yes, the MOQ limit is according to different product.
4. How do you ship the goods and how long does it take to arrive?
We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping is optional.
5. How to proceed an order?
Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We arrange the production.
6.What’s the payment mothed?
We are accpet payment by T/T,L/C,PayPal,VISA,MasterCard,Western Union,D/P,D/A,Other.

 

Detailed explanation of PIR sensor switch

In the field of electronic anti-theft and human detectors, PIR sensor switch is widely used. Because of its low price and stable technical performance, it is appreciated by users and professionals.

 

The Working principle and characteristics of PIR sensor switch

The infrared rays of about 10μm emitted by the human body are enhanced by the Fresnel filter and collected on the infrared sensor source. Infrared induction sources usually use pyroelectric elements. This element loses charge balance when the temperature of the infrared radiation of the human body changes, and releases the charge. The subsequent circuit can generate an alarm signal after detection and processing.

 

  • This kind of probe is aimed at detecting human body radiation. Therefore, the pyroelectric element must be very sensitive to infrared radiation with a wavelength of about 10μ
  • In order to be only sensitive to infrared radiation, its radiation surface is usually covered with a special Fresnel filter, so the interference of the environment is obviously controlled.
  • The sensor of the passive infrared probe contains two pyroelectric elements connected in series or in parallel. Moreover, the two electric polarization directions are exactly opposite, and the environmental background radiation has almost the same effect on the two pyroelectric elements, causing the discharge effects to cancel each other, so the detector has no signal output. Once a person invades the detection area, the infrared radiation of the human body is focused by a part of the mirror and received by the pyroelectric element, but the heat received by the two pyroelectric elements is different, and the pyroelectricity is also different and cannot be offset. The signal processing will alarm.
  • According to different performance requirements, the Fresnel filter has different focal lengths (sensing distances), resulting in different monitoring fields of view. The more fields of view, the tighter the control.

 

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