By Brian Rhodes, Published Dec 16, 2020, 10:46am EST
Door position switches are frequently ignored or forgotten, yet can solve major access control problems.
Access 'control' itself relies on these switches to make the right logical decisions about sending alarms and locking doors. In this note, we look at how to choose the right set of contacts for your door and cover these details:
Sensor Function
DPS Importance
Sensor Types Available
Doors Impact Selection
Common Sensor Types
Common Sensor Mount Locations
Sensor Pricing
Controller Connection Location
Mitigating Magnetic Tampering Risks
Door ******** ****** ******** ********
*** ****** *******, '**** position ********', **** ****** 'DPS', '**** ********', ** 'door *******', ****** ******* a **** ** ****** or ******.
********* *** ****** ******* system ********** ** **** interface ****** ** ***** this ****** ** *********. The ****** ** ******* is ******: **** * door ** ****, *** circuit ** ********. *******, when *** **** *****, the ******* ****** ****, signaling ** *** ****** system *** **** ** not ******. ***** ***** cannot ** ****** ** 'secured' **** ******, **** sensor ********* ***** * facility ** **** **********.
Security *********, *** ***** *******
****** ******* ******* *** blind ** ******* * door ** **** ** shut ******* ******** ********. Because **** ***** ****** limit ******** ** ******* unauthorized ****** **** ******** an ****, *** ** the ******* *** *** system '*****' ******* ** not * **** ** secure.
**** ********** ** *** install *** ** ***** to '**** *****' ** otherwise ******** *** ********, but **** ******** ** a ******** *******. ******* DPS, ****** ******* ****** be ******** '**********' ** all, *** ********** *** should ** * ********* aspect ** ***** *******.
Broad *********
******* **** ******** ******** are **** ** * variety ** *******, ***** are ********* ** ******* available. ***** ***** *********, there *** **** ** six ***** ***** **** in ********** ******:
**** ************* *** '********' ****** types ** ***** ********* and ******** **** ********* sporadic ***** ****** *** system ******* **** *****. Like ***** ****** **********, choosing *** ***** **** position ****** ******* ************* on *** **** - which **** ** **** it **, *** ***** it ** ****, *** even ***** ********* ** faces. ** ******* ***** factors ** ****** *****.
The ******* *******
***** ** *****, ****** selection ** ********* ***** on ***********, **** **** are ********* ** ***. Some ***** ** *** switches *** **** ********* to ******* **** ****** depending ** *** **** itself.
** *** **** **** position ** * ******** of ********** ******* **** the **** ******** ****** should ** ********** **** the ******* ******, ** it ** ******** ****** or * *** **** or ********. ***** ******* door ********** ******* *** show **** *** **** is *** **** '******' as * **** ****** does, *** **** **** typically **** *** **** lock ** *******.
**** ********* ******** ******* have * *******, *** that ***** *** ****** is ******* ** *** strike & *** **** shows *** ****** ** in *** ****** ********.
*** ***** ***** **** a **** ***** ****** which **** ******** **** the **** ** ********* & *** ******** ***** is ******** ******** ******* the ****, ** **** is ******** ***** **** closed.
*** ******* ***** ***** rate ** ********* *** / ****, * **** BS ** **** *** fitted *********. *** ******* location *** ***** ** approx */* ** */* of *** *** ******* the ***** **** ** the **** **** *** strike ****. ****** ****** 100s ** *** ***** of ***** ** **** way * *** ******** say **** ***** ***** rate *** ** **** movement *** ** **** or ****** *******.
***** ** **** ******** on *** ******* ** your ****, ****, ****** or ******* **** ***** is ** **** ******* of ******* ***** ** the *********** ****** ********.
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Comments (16)
Shannon Davis
***** ****** *****. ******* important ***** ** *** magnetic ***'* ** *** actual ******. *** ******** on ****** ***** ***** with *** ******* ** top ** *** ****. Often ***** *********** ***** place *** "*******" ****** in *** ******* *** not ****** ** **** glue ** *******. **** time *** ******* ******* and **** *** ****** moves. ******* ********** * customer **** **** ******* their **** *** *** being **** ** **** the ****, **** ****** they *** ** ****** granted ******* *** ****** thinks *** **** ** already **** *** ******* of *********** ******** *** door **-***** ***********.
**** *** **** ** the *** *******/**/********** ******* we **** ******* ***** Nascom *******. **** ********* than ****** *** ******* a **** *******. ***** "Shark" ****** ** *** ultimate *********** *** *** Squishy ****** *** *** don't **** ** ***** about ** ****** **** time.
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Brian Rhodes
*'** ***** ***** ** those '*******' *****, *** what *** ******* ***** (terrible!) *****. ******!
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Chuck Janzer
***** * ********** ***** with **** *******, **** customers *** ***** "****** control" ** * ******* entry ******, ******* ****. They ***'* **** ***** door ******** ** *** motion. ***** ** ****** run * **** *** of ******, ***** * composite ***** ** *********, seldom ** ** ******* any ******** **** ** not ***** ****. **** applications *** ****** ** avoid ******* *** ***** keys. ***** *** *********** product *** ************ ** the ***** ** *** customer *** ***********.
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Undisclosed Distributor #1
** *** **** **** position ** * ******** of ********** ******* **** the **** ******** ****** should ** ********** **** the ******* ******, ** it ** ******** ****** or * *** **** or ********. ***** ******* door ********** ******* *** show **** *** **** is *** **** '******' as * **** ****** does, *** **** **** typically **** *** **** lock ** *******.
**** ********* ******** ******* have * *******, *** that ***** *** ****** is ******* ** *** strike & *** **** shows *** ****** ** in *** ****** ********.
*** ***** ***** **** a **** ***** ****** which **** ******** **** the **** ** ********* & *** ******** ***** is ******** ******** ******* the ****, ** **** is ******** ***** **** closed.
*** ******* ***** ***** rate ** ********* *** / ****, * **** BS ** **** *** fitted *********. *** ******* location *** ***** ** approx */* ** */* of *** *** ******* the ***** **** ** the **** **** *** strike ****. ****** ****** 100s ** *** ***** of ***** ** **** way * *** ******** say **** ***** ***** rate *** ** **** movement *** ** **** or ****** *******.
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Patrick Mirto
* ** ****** **** to *** **** *******. It *** **** ** contention *** ****** *** that *** ******** *****'* pay ****** ********* ** the ***** ***** **** door ********.
** ** ***** *** granted **** **** *** needed *** **** ** installed *** ** *** ever **** ** ********* the ******** ** ********* of ****.
***** ** ****** **** improvements ** *** **** operate. ** *** ******* in *** **** *****, you *** ********* ** contacts ******* **** *** regulated. ***, *** ***** other ******** ***** *** rarely ************ ** ******** other **** ** **** one.
*********** ****** * ********* technology. **** ***'* *** reed ********, *** *** balanced ******** ********. * don't **** ** *** other ******* **** *** tried ***/** ********* ** coming ** **** * better ******* ** * different **********. * ***** be ********** ** **** from ****** ** ***** options. **** **** ***** more **** **** **** security ********, **** ***** standard ******** ** ******* mount ******** ** ****.
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Undisclosed Manufacturer #3
*** ********** ******...*** *** of **** **** ******** switches. *** ******** ******* for *** ****** ******* system *** *** *** the ********* ******. ******* the ****** ** ******* on *** **** *** and **** *** ***** of *** ****** *** being ** *** ******* swing *** ** *** door.
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Ricardo Lucas
***** ****** ** *****. Have *** **** ******** the ******** ***** *** biased ****? * ******** use, ******** ********, ****** magnetic ******** ******** ** the **** *****. ***** normally *** ** "*****" the ******* ****** **** a ******** ****** *** having * ****** ******** makes ** **** ********* if *** ********* **********. The ****** * **** recommend ****** ****** ******* on * **** ******** installation **** ********* *******.
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Lynn Harold
**** ********* **** ** see *** ***** ** using * *** ** a ***-**** ****** "**** only" ****. *****-**** ********* like ** *** ***** of * ****** ** office ******** ****** **** every **** *********, *** just *** **** **** card *******. * ****** find ******, ******, ** other ************ **** ********* that **** ***** ****.
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David Johnson
******** ******. ** ***** the ******** ************ **** is *** ****** ***........******'* be ** ****** ******* issue ** ** ****'* ;-)
** ****** '*****' ** a **** **** ******* for **** ***** *****.
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Jason Choy
*** ******* ***** ****** Brian!
**** = *****
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Undisclosed #4
***** ** **** ******** on *** ******* ** your ****, ****, ****** or ******* **** ***** is ** **** ******* of ******* ***** ** the *********** ****** ********.
*****: **** ******, ** grows ** *** **** subs *****/*******/********** *** ********* of **** ******.
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Undisclosed Manufacturer #2
** *** **** ****** control *** ***’* **** a **** ************* ** the *** *** **** Status ********** *** ********, learn ****.
**** ********** *** *** percentage ** *** ***** willing ** **** *** additional **** ** ********* them.
****, ****’* **** ** experience ** *****.
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