Senba Sensing Technology Co., Ltd.
Digital Signal Processing Passive Infrared Sensor D202X
Digital Signal Processing Passive Infrared Sensor D202X

Digital Signal Processing Passive Infrared Sensor D202X


D202X is 2 elements PIR sensor, with small detection angle. Mainly used for toys and other small angle requirement products.

PIR sensor sense the motion object, always used to detet the human. There is a detect rang for the PIR sensor. When a people move in or out of the detect rang, the PIR sensor will be triggered. PIR sensor are low-power, small, easy to used. For this reason it can be used for the alarm system and lighting control. PIR sensor also named passive infrared, Pyroelectric or IR motion sensor.


  • Excellent S/N ratio

  • Low consumption

  • Slight movement can be detectable



Encapsulation Type


IR Receiving Electrode

2×1mm, 2 elements

Window Size


Spectral Response




Output Signal[Vp-p]




Detectivity (D*)

1.4 ×108 cmHz1/2/W



Output Balance


Offset Voltage


Supply Voltage


Operating Temp


Storage Temp


 Field of View



Equivalent Circuit



  • Toys

  • Wireless security sensors

  • Security cameras

  • Security alarm system


1. What can trigger a PIR sensor?

The first cause of PIR false alarms is low or unstable voltage at the detector. Test to make sure the voltage at each PIR is above 13VDC and stable. The second cause of false alarms is sudden infrared movement / heat changes in view of the detector.

2. Do PIR sensors work in the dark?

Yes, motion sensors work in the dark. The way that a motion sensor detects movement has nothing to do with how light or dark it is in the immediate area. Since infrared energy is present and can be detected regardless of the amount of light in the environment, a PIR motion sensor will work just fine in the dark.

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