# PIR sensors

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#### Poncho

##### New Member
Why its so har to find a Pyroelectric Infrared Sensor and fresnell lens dealer for motion sensors and at a reasonablerble price?
Seems to be the electronics manufacturers best kept secret.
Does any body can explain it?
Thank you all.

#### kinjalgp

##### Active Member
The reason is very simple. Pyroelectric Sensors do not find application in many fields. They have limited scope of application i.e. motion sensing and mey be a few others. The demand for this sensors is very less and hence production cost goes high 8)

#### hsvgtsr1

##### New Member
pirs

if you want to find out more about these sensors i can help as Ï'm an ex security installer

#### herbymcduff

##### New Member
as with what kinjalgp said is true. But it could also mean that there isn't that many companys that offer that product, thus them being able to sell the product at high prices too.

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