Intrusion Sensor Selection guide

Author: Brian Rhodes, Published on Jul 21, 2016

When designing intrusion systems, a number of sensor types can be selected, including:

  • Magnetic
  • Acceleromteter
  • Glass Break
  • PE/PIR/Laser Motion
  • Inductive Loop
  • Pressure Pad

While magnetic contacts may be most common, there are most likely multiple devices to choose from and some that may even be better suited for the application.

In this guide, we explain each sensor type, how much they cost, where they are typically used and their comparative strengths and weakness.

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  • ********
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  • ***** *****
  • **/***/***** ******
  • ********* ****
  • ******** ***

***** ******** ******** *** ** **** ******, ***** *** **** likely ******** ******* ** ****** **** *** **** **** *** even ** ****** ****** *** *** ***********.

** **** *****, ** ******* **** ****** ****, *** **** **** ****, where **** *** ********* **** *** ***** *********** ********* *** ********.

[***************]

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*** **** ***** *** **** ****** ***** ****** **** * magnet ** **** * ******* ****** **** * **** ** window ** ****. *** ***** ********* ** *** ****** ** a ******** **** ******* ***** *********** ******* ******* *** ******. When *** **** ** ****** ** ******, *** ****** ***** away **** **** ****, ******* ** ** ****** **** **** the ********, ******* *** *******.

** ** **** ******** **** ****** *** ****** ** **** an ***** ** *** ******. ***** **** ******* *** *********, in **** ******** *** ***** ***** *********, *** ***** ********* is *** ****.

  • ****: **** ****** ** *********** *** ** ***** ****** ***************** ** *****/******* **** **** *****. ** ********** ** * concern, ******** ******* ******** ** ** **** **** ****** *** common, *** ** ******* ***** ** * ******* ******** ******* are *********.
  • ****: ***** ** ********* *** **** ********, *** ***** ******* outside *** ** *********** ****** **** ********* ******* ***** ***** are ****. ****, **** *** ***** ** ***** ******** **** *****/****** buffet ** *** **** ** *******.
  • ****: ***** *** *********** *****, ********* ******* ******* $* - $10 ****.

*** ********* ** *** ******* ********** ** ******* ******** ******* are ************ ********. ******* ** ***** * ****** ****-**** ******* **** *** potentially ** ******** ** * ******, ********* ****** **** ******** to *** ******, ************ **** * ******* ******* **** *** cap ****** ** ***** ** **** ******* *** *****.

**** ******** ***** *** ****** ********** ***** ** * ****** unit ****, ********* ***** ***** *** ****** ***** ** ****** units.

*************

* ***** *** **** ******** ****** ** * ***** ****** the ****** **** ** ********** *****. **** ******, ****** ***************, ******* ** ********** *********, ******* *******, *** * ****** small **** (no ********* **** **** *** ** ***** ** ******* *** operation, ***** ** ** ********* **** ******** ***** ** **** applications. *** ***** *** ********* ***** ****** ** ***** ******** onto ******** ******* (**** ** ****** *** ** ****** *****) but *** ** ******* ** ***** *** ******* ** ****. This********* ********* ******** *** *** ** ***** ** **** ***** *********** systems:

***** ************** ** ***** *** ******* *** ** ********** **** expensive **** ******** *******, ***** ** *** **** *** *** total ************ *** *** ****, *** ********* **** ********* ******* as ****.

  • ****: ***** *** ********* ****** ** ***** ** *****/*******. ****** piece **** ******** ** ***** ********* *** ***.
  • ****: **** **** * *** ****** ** ****** ** ****** before *** **** ******. ********* ****** ** ******** *** **********.
  • *****: ************** ***** **** $** - $** *** **** ******, and ********* *** ******* ******* ** ***** ******* ~$* *** year.

***** ******* (** ****/*** ********/*****)

* ****** ****** *** ********** **** *** ********* *****, ******* that ******* **** ****** (** ****/***-************) *** **** ******* **** *** *** **** ******* **** only * ****** ****. ********** *** ******* ********** **** ***** lines ** ******* *****, ***** ******* **** ********* ********* ***** of * ******* **** ** **** *** *** ** ***** to ***** ** ****** ******* **** ****.

***** ***** *** ********* ********* ** * **** ***** ** designs *** ****** ****** ** ******* ***. *** ***********, ******** range, *** ********** ** ***** ***** ********** *** ******** ** unit ****** *** *****.

** ***** ** ********* ********, ** (************* *****) *** ***** expensive *** **** ***** ** *****, ******** ** *** (******* infra-red *******), ******* ** *** *** ******** ********* *****, **** ***** ***** ***** *** **** ****** *** **** accurate *** ********* ** ***** ******.

  • ****: ***** ******** ****, *** ******* ***********.
  • ****: ***** *** ** ********* *** ** *** ********* ********* prone ** **** ***** ******.
  • *****: ********* ************, *** ****** ***** *** ** $**, ** ** ******** Laser ******* ******* $*,*** ** ****.

***** *******

******* *** '***** *********' ******* ***** **** **** ****** ** exotic *****. *** **** ****** **** ** ***** ****** ** the '**********' ******** **** ** * ****** ***** ** ***** **** on *** ********* ************** ** ********** *****. ***** ******* *** used ***** **** ******* *** ******* **** ****** ***** ** lobbies. *** ***** ******** **** *** ***** ******* ** ******, but **** *** ****** ****-******* ***** **** *** ***** *****:

******* **********-**** ******* *** **** ** ********** ************, *** ***** complex ** ******* *** ********* ***** ******* ****** ******* ******* to ******* ***** ******. ** **** *****, *** *********** ******** of *** ********** ** ***** ** *** ******* ** ****** like **** ******* ** ***** ********, *** ** ****** ***** voices, *********, ** ***** ****** ***** *******:

  • ****: ***** ******* *** ** **** ******** **** ********** ** properly ***** ** ******* ******, *** ********* ******** *** *** always ******* '******** *****' ** ********** *****.
  • ****: ** **** ** ********* ********, ***** ******* *** ** a *********** ****** ** ***** ******. ******** ** '***** *******', more '***** *******' *** ********* ****** ** ***** *** **** square *******.
  • *****: ******* ******* **** ******* $** - $** ****, ******** outdoor ***** ********* ********* *** ** $*** ** **** ****.

********* ****

********** ********* ******** ** * ******** *******, *** **** ******* of *** ***** ******** *********** *** **** ******* ** *** large ********* ***** ********. *** ****** ****** ** ***** ** inductive ****** ****, ** * **** ******** **** ***** *** driveable *******. ** ********* **** ***** * ***** ** ***** electrical ********* **** **** ******* **** * ******** **** ****** through ** *** ******* *** ****** ********* *****.

*** **** ******, ***** ******* *** ************* *** ***** **** triggering ************ ** **** *********, *** *** **** ****** *** detecting ******* ******** ** ******* ****, ******** **********, ** **********.

  • ****: ********* ***** *** ******** **** ********* ********, *** *** prone ** ***** ******** ** ********* ** *******. **** *** easy ** ******* ** ***** *****, *** *** ***** ******** of ****** ****.
  • ****: **** *** **** ****** *** ********* *****. **** **** not ***** ** ***** ******* *** ******* **** ******* *** typically ***** ******** ********.
  • *****: **** ***** **** **** **** $***, *** ****** (****** loop) ** **** ********* (******* ******** *******) ***** *** **** $1000 ** ****.

******** ****

***** ********,******** ********* ******* ** ***** ***** *********** ******** (** ******** ****) ** motion/audio ****** *** ** ****, **** ******** ******, *********, ** even ******* ********* *****. ******** **** *** ********* **** ******* on *** ********* **** ** * **** ** ****** ** entrance ******* ** * ****** *******.

* *** ******** ** **** ** **** ******* ********** ********** and **** *********** **** ***** ****** *****, *** *** *** alarm **** ****** ** *******.

  • ****: ******** **** *** *** ******* *** ************* ********, ***** installable ***** ****** ** ***** ********. *** **** **** *** trigger ***** ****** ****** ** ****** ** * ******** ****** range ** ********** ******* **** ****.
  • ****: ******* **** ****** '** ******' **. '**** ******', *** degrees ** ***** **. ***** *****. *** *** ****** ********* requires ************ ** * ******, ********* ******* **** **** ** concrete *** ****** ** **** ** ****** ** ****** *****.
  • *****: *** **** *** **** *** ****, ******* ******* **** $500 - $**** **** *** ******* ******** ************, *** *** cost ***** ********* ** ******* *** ** ***** ******** ***** more **** ~** ** **.

Comparison *****

*** ***** ********* ***** *** ********** ** **** *****, ********* in ***** ** **** ** **** ******** ****.

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