Door Position Switches Tutorial

Author: Brian Rhodes, Published on Sep 05, 2013

Door position switches get no respect. They make Access Control possible, yet they are frequently ignored or forgotten. Every EAC relies on these switches, labeled "DPS", to make the right logical decisions about sending alarms and locking doors. Choosing the right switch for a door is not complicated, but its more than a 'One size fits all' answer. In this note, we look at DPS and how to chose the right set of contacts for your door.

Function Overview

**** ******** ******** ****** ******* * **** ** ****** ** closed. ********* *** ****** ******* ****** ********** ** **** ********* module ** ***** **** ****** ** *********. *** ****** ** sensing ** ******: **** * **** ** ****, *** ******* is ********. *******, **** *** **** *****, *** ******* ****** open, ********* ** *** ****** ****** *** **** ** *** closed. ***** ***** ****** ** ****** ** '*******' **** ******, this ****** ********* ***** * ******** ** **** **********.

Broad *********

******* **** ******** ******** *** **** ** * ******* ** systems, ***** *** ********* ** ******* *********. ***** ***** *********, there *** **** ** *** ***** ***** **** ** ********** access:

**** ************* *** '********' ****** ***** ** ***** *********, *** ******** with ********* ******** ***** ****** *** ****** ******* **** *****. Like ***** ****** **********, ******** *** ***** **** ******** ****** depends ************* ** *** **** - ***** **** ** **** it **, *** ***** ** ** ****, *** **** ***** direction ** *****. ** ******* ***** ******* ** ****** *****.

The ******* *******

****** ********* ** ********* ***** ** ***********, **** **** *** installed ** ***. **** ********** ** *** ******* - **** types ** *** ******** *** **** ********* ** ******* **** others ********* ** *** **** ******. *** *******, ** * door ***** ** ********* **** * ***** ******** ** ******* wall, ******** ****** ********* *** ******* **** ** * "*******" frame ***** **** ** *********. *******, * "********" **** ******* type ****** ** ***** ********* **** ***** ***** ****************.

********, *** ********* ** *** **** ** *** ***** ** critical ** ****. **** *** ****** ***** ** *** ****** ***** * ***** ******** *********** adjacent ** **** *****. ** *** **** ** ***** ** out ** ****** ** *** ******* ******** ** ***** ****, the ****** *** *** ******** ********. *** ****** ** *** to ******** *** ******* ***** ******, *** *** **** ********* Primer ****.

Mounting ********

*** **** ****** ** ******** ** ***** *** ****** ****** be *********. ***** *** * ****** ** ******** ********* ** choose ****, ***** ** *** ***** *****:

*** **** ** ******* **** ***** ********** **** ********. ***** from *** ******** **** ** ****, *** *** **** *** where *** ******* **** * *** ****, *********:

  • ********/********:**** **** ** ************* ********** ** *** ****** ******* **? An ***-*********** ******, ** ** ******* ******* ** ******* *******?
  • ****/***/****:** *** ******* ** ********** ****** *** **** ****, **** the ****** ** ******* ** ********, ***, ** *****?
  • ******* *******:*** ***** ** *** **** ******? **** *** *****, ** a ******* ***** *** ****?

****** * ****** ** *** **** *** ********* *** ** is **** **** ****** *** **** ****** ****, ********** **** we ***** ** *** ******* *****:

Type *********

******** '******' *****:**** **** ** ****** ** *** **** ******, ******* ********* the ***** ***** ** ** ********* **** *** *****, *** the ***** '******' ***** ***** ********* **** * ******* **** in *** ****. ** **** ***** **** **** ** ****** is **** ** *** '*****' ****, *** ** ******** ****** installation ** *********/********* ** *********.

  • ****: ****** '******' ******* *** ********* *** ************* ******** ** most **********. ************ ** ****, ********* * ******* ** ******** and **** *** **********.
  • ****: **** ***** ** ********* ******. *** ********* ***** *** be **** *******, **** ******* ******* ** ** ********* *********** adjacent ** **** *****. ********** ** ***** ******, ********** ** doors *** ******** ** **** ** **********.

******* *****:* **********, *** ********, ***** ** ******. **** *** **** is ****, *** **** ******* * ******, ********** *** *******. When *** **** *****, *** ****** ** ********, ********* ** open. ******* ******** *** **********, **** *** *** ******* ** false ****** ****** ** **** ** *********. ********* ******* *** are ********* ** *** ***** ****.

  • ****: **** *******, ******* ******* ******** ** ******. * '*** sided' ****** **** ****** ********* ******.
  • ****: ***** ** ******** ******* ** ****/*****. **** ** ****** or ****** **** * **** ** *********** ****** ********* ** frame *** **** *********.

******* ***** *****:**** ** ******* ** **** ***** ** *****: ****, ******** frames, *** ****** **** *****. ********* ******** *** ******** ********* with ****** ****** ****.

  • ****: ****** *** ******* ********* ** ******** ************* ******* (****/****/****/****). Minimal ************ ***** ********.
  • ****: ******* *** ******* ** *********. *********** ************ ** *************** sensitive *****.

******** *****:* ***** ****-******* ******, **** ****** ** **** ***** ********** glass ********. ********* **** *** **** ** *****, ***** ** run ****** *** ***** ****.

  • ****: *** ***** ** *** ********* *************** ** ******* *****, and ***** *********.
  • ****: ********* **** ********* *** **** ********* ** ******* **** Surface ******. **** ** ******** **** ** *** ****** ***** clearance ***** ** ********** ***** ****** ** ******* ****.

******** ****:* ********* ****** ******** *** ***** **** ******** '**' ****** than *****. ********/****-** ***** *** ********* ** ******* **** *********** sensors, *** ** **** *** ******** ** ********** ********.

  • ****: **** ** *******, *** ********* ******** **** * *********** armature *** ******* ******* *** *****-**** ***.
  • ****: ***** *********** ** ***** ****** *** ** **** *********. Vulnerable ** ****, *****, *** ******** ******.

Sensor *****

*** **** ** *** ******* ** ********* **********, **** ************ labor ******* ****** **** *** ***** ** *** ****** ******. Most ***** *** ********* *** ***** $**, **** **** '**** security' ** ********** ****** ***** **** *********.

Common *********

*** *** *** ******* *******, *******. **** ****** ** ******** potential *********** ****** ** ****** ******** **** **** *******, ******* most ************* ******* *** **** ********* ********* ***** ***. ** general, **** * ****** ******* * ****** ** ***** ******, one ** *** ********* ********** ** *** *******:

*****/****** ********:******** ** ********** ******* *** ****** ** ******, ****, ** floor *** ** **** ****** ******** ***** *******. * ****** rag *** ***** ******* **** *** *** *** *******, *** continual ******** *** ******* ******** ***********.

************:***** *** ****** **** **** ****, ******* ****** ***. ******** the **** ****** ****** **** ********** *** **** ** ********** up *** ****** *** ** ********.

******* ******:******* ******** *** ***** ******* ** ****** **** ********* **** time, *** ******* ****** ** ******* ********* ** **** ************ can *********** *** ****** ****. *********** *** ** ******** **** frequently ** ******* ***** **** ******.

Magnetic ********* ****

***-********** ******* ********* *** ******* ** ***** ****/***** *****. ******* of **** ******** ***********, **** ******* **** ** ******** ** 'fool' *** ****** **** ******* ** * '****** *****' ** a **** ********, ******** ****** ** ****** ******** ** *** sensor, **** *** ******* ******** **** ******.

***** ******** ********* ** * **** ********** ****, ** ****** ******* ** ** ********* ***** ******, *** electronic ******. **** ***, ******* ***** ******** ****** *** ** place, ****** ************* *** ******** **** **** ********. ****** ******* the *** **** ********* '******' *** **** ******** ******* *** door ** ****** ** ******* ** *****, *** ******* **!

Selection *****

***** ** **** **** *** ************ ********, ********** *** ****** type ********* ***:

  • ********* *****:*** ******* ** ******** ******** ******, ********* ** '************' ******.
  • ***** *****/**** ******:*** ******* ***** ** ******** ****** ********* ** ***** ********* and **** ***** ******** ****.
  • ******/********:*** ******* ** ******* ***** ******, ******* ******* ** *** usually ** ******** ***** ************ ***** **** ****.

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