What ** * ****?
***** ***** ***** ****** ******. ** alarm ****** *** **** **** ****** inputs (*, **, ***, ***.). *******, those ****** ****** ********* ******* **** being ******* **** ******* ****, ********* by ********, ** ********** ********* ** events. ***** ******** ******** ***** ******* to ********** ****.
*** ******* ** * **** *** part ** * ****** *******. * sensor ** ***** ** ******* ** wired ** * *******, ***** ********** at * **** ** ***** ********* in *** *****. *** ***** ******* voltage *** * **** ***** ****** of ******* ** *** *********, ********** the *******. **** *** ****** ** the *** ** *** ******* ** closed, ******* ***** **** *** ******** terminal, *** ** *** ******, *** back ** *** ******** ********.
*** *** ********** ** ***** ** that, ******* **** ******* ** * zone *** **** ** * ****** circuit, ***** ****** ********* ***** ****** in *** **** *** *********. *********, many ********** *** ** ***** *** number ** ******* ** ** ********** circuit, ** **** ** ***** *** be ****** **** **, ** ****, one ** *** ********** *******.
******* ****** **** ** ********* *** opening ** ******** ****** ********, ****** tend ** ***** ** ** **** **** ** * ****** **** ** **** **** * ****** *** created ** **** ******* ** *** completed * ****** *******.
******** ***** ****** *** *** **** convention ** **** ***** *** ****** zones, *** *** ** ** **** that *** ******** ******** ** ******* a ****** ********** **** *** ********* sensor *** ****** ** **** ******* or * ****** *******. ***** ***** is ** ***** ********** ******* *** sensor *** *** *****, *** ***** is *** ******** ********* *** ****** of ******* *** ** ******* ******* on *********** **** *** ******** ***********.
*********** ******* ********* ******* * ******* ** damaged ** * ******** ******* ** circumvent *** ***** ** ********* *** amount ** **********, *************** ******* * ****** sensor ** * ***** ** *** wire.
Examples ** *****
** * *********** ***********, ******** * to ** ***** *** ****. ***** often ******* * ***** **** ** the ***** ****, * ****** ***** detector **** *** *****, *** * number ** ********* ***** *** * windows. ****** ********** *** **** ******** zones, **** ***** *** ********** ******* and ********* * ******* ****.
** ** ****** ***********, ****** ** zones *** ***** *****. ** ******** to *** ***** ** ***** ** a *********** ***********, ******* ***** **** have ***** ****** ****, ********* ****, environmental *******, ***. *** ****** *** office, **** ***** *** ********* **** to ******* ********** ***** ************* *** coming ****.
** **** ****** **********, **** *********, over *** ***** *** ******. ** addition ** **** ** ****** ***** have, * ******** ***** **** **** multiple **** *****, ******** ************* *****, interior *** ********* *****, ***.
**** ** ***** ***** *** **** programmed **** **** *****.
Zone *****
**** ***** *** ****** ** ****** that *** ** ******** ** * zone **** ***** *** ***** **** to ** **** *** **** ** open.
**** * ****** ******* ** ***** *********, burglar ****** *** ****** ******* * local ****** ****** **** * ***** or * *****, **** * ******* signal ** * ***** *****, ** both. **** ********** ***** ****** **** the ******* ** ******* ******** ******* on *****, ********* ******* ********* ***** of ******* ******* *** ********** ********* output *******. ****** ****** ** ******* are ******* ******** ** ********** ** not **** ** ******* **** ****** manually *** ***** ****. ***** ****** of ******* *** ****** **** *****.
** ******** ** ********** * ***** ****** such ** * *****, ******* ****** can **** ****** **** ** ******* *********** ** a ******* ******* ********** *******, ***** **** relays **** *********** ** ***** **********. Transmitting *********** **** ** ******** ** possible ***** *** ***** ** *** alarm ****** *** ******* ******* ** notify *** ******* ****** ****** ****** and ***** ***** ********** *** *********** ** be ******** *** *** **** ****** arriving ** *****. **** ***** **** ****** identifying *********** **** ************ ** ******* station, ** *** ******* ******* ********** knows ******* **** **** ** **** ** is.
****** ***** ** ***** *******:
- ******* ******
- **** ******
- ***** ******
- ******* ******
- ** **** *** ******** *****
Triggering *******
****** *** **** ** ***** ****** can ** ** ********** ** **** any **** ** ******. *** ****** of **** **** ** **** *********** ** choose ** ** ********* ** *** choice ** ****** ******. *** *******, an ********* *** ******* * ******** ****** ** send * ***** ******, * ******* alert ******, ** ****** ******** ****. A ******** ******* *** ** ********** as * ******* ******** ****, * perimeter ****, * ** **** ****, or **** * ***** ****.
**** ****** ******* **** ** ***** detectors *** ****** ******** ********* *** an ********* ** **** ****, *******. Smoke ********* ************** ********* ** * ***** ******** ****.
Medical ***** *****
******* ***** ****** ******** ** *********** medical *********, *** **** ** ********* ** requested. ****** *************** ** ******* ***** zones ***:
- ** **** *********, ****** ******* ***** is ***** ** ********
- ** ***** ** *****
***** ****** ****** ***** ***** ****** a ****** ** **** ****, ** **** they *** ****** ** ******* *** keypad during * ******* *********. ***** ****** ** a **** **** ******* ****** ******* may **** ** ********* ** **** zone, ***** ****** *** ******, ** it ****** ******* *** ***** ** home **** ******* ** ****** * medical ********* ***** ************** ********* ********* services.
****** ********** ******* *** ******* ****** are:
- ***** ******* ******* ** ********* ***** around * ********
- ******** ******* **** ** * ******** or ********
******** ********* ******** *******(****) *** ******* ***** ***** *** two *** ************* ******* *** **** and * ********* ******* **********. ***** are ******* ********* ******* **** * built ** *******. ********** ******** ****** separately *** **** **********, ** ******** to *** ******** ***** ********** ******.
****** * ***** ******** *** * strobe ****** ******* * **** *** help ********* ********** ******** *** ****** of *** **** ******, ********** ** areas ***** ***** ******* *** **** to **** **** *** ******. *******, some ************* **** ***** ******* ********** that ******* ** ***** ***** ******* itself ************* (** "**** ***") ***** a ***** ****, ******** * *******, which *** *** ** ****** **** for ** ********* ** *******. ** the ***** ************ *** * ** hour **** ****** **** ****** *** auxiliary ******, ********** *** ****** ** have * ****** ********* ** **** output, ******** **** *** ******** **** output **** *** ********* ******* *******.
Fire ***** *****
**** ***** ******** * ****** ** smoke ** ****, *** **** *** **** department ** *********. ****** *************** ** **** zones ***:
- ***********, ***** ***** * ******* ****** ** there ** * ******* **** *** wire ** *** ******
- ****** ******, ***** ****** *** ***** ** output * ********* ***** **** * burglary ****
- ** **** *********, ****** ******* ***** is ***** ** ********
- ****** ** ********
********* **** ********** (*******) *** ***** *** ****** again, *** **** ********* ** ** receives * ****** ****** **** *** smoke ******** ****** * **** ***** period ** ****. ***** *** ****** for ******* **** ** ***** ****** caused ** ******** **** *** ***** detectors.
******* ******** ****** * ** **** **** **** cannot ** ********, **** **** * normal fire ****, *** ***** **** ****** the ******, *** *** *** ******.
****** ********** ******* *** **** ***** are
- ***** *********
- ****** ******** *********
- **** *********
- ****-**-**** *********
- **********
- **** ********
***** ********* ******* **** ********** *** ********* types ** ********** *******. **** ** because *** ****** ** *** ********** device *** **** ************ ** **** as ** *** **** ** ******* they **** ** ******, *** **** kind ** ********* **** ********* ** required. * ********* ********** **** ******* a **** ********* ******** **** * carbon ******** **********, *** *******, *** this ****** ********** ** ******** *** necessary ***** *** **** ******* ** simply ******* * ****** ******* ** investigate *****. *** ******* **** ***** could **** ** **** * ****.
Panic ***** *****
***** ******* ** **** ** **************** ********* ** ******* ******, *** cause ******* ******* ** ******* ****** instead ** ** *********. ****** *************** of ***** *****:
- ** **** *********, ****** ******* *** panel ** ***** ** ********
- ****** *********, ******* * ****** ** central *** ** **** ****** ** keypad *****
**** ***** ******** ** ****** * audible *****, ****** ** ***** **** an ******** ******* ** ******* *** police ** *******. **** ***** **** in ********** ************* ***** ********* *** ********* and ** ********* ***** **** * clear **** ** ******. *** *******, a ***** ******* ******** **** * cash **** ********* **** *********** ***** may **** ** ** **** ** instantly ******* * ***** *** ****** to ******** *** ********* * *** level ****** **** ** ** ********* with * *****. **** ********** * ***** button ** * ** **** ******* alarm ****, * ******, ****** ***** button ** **** ********, ** **** of * ******* ******.
****** ********** ******* *** ***** ****** are:
- ******* ****** / **** **
- ********* ******
- ******** ******
- ******** ******
- **** *****
- ***** *****
Burglar ***** *****
******* ***** ***** ******** *** ******** of ** ********, *** ***** ******* station ** ******* ******. ****** *************** of ******** *****:
- ****** **** **** ***** ** *****
- **** ****** ** *****
- *** ** ********
***** *************** ***** **** * ********* ****** ***** **** alarm *********. *********, *** ******* **** to * ****** **** ** ********** as * ***** ****. **** ****** a **** ** *** *** ***** from *** ****** *** **** *****, opening *** ******* *** ****. *** other ***** *** ****** **** *** moment *** ****** ** *****, *** will ** **** ***** ** ******, but *** **** *** ** ****** or ****** ** **** ***** ** necessary ****** *** ********* ******. *********, opening **** **** **** ***** ******* countdown ****** ***** **** ***** *********, allowing *** **** ** **** ** the ****** *** ***** *** ****, disarming *** ******.
**** ****** **** * ************* ***** time. ****** ***** **** **** ** be **********.
***** ******* *** **** ** ***** *** premises ***** ****** *** ***** ** *** disarming *** ***** ****** *** *** of *** ***** ** ** ********* ****** source ** ***** ******. ***** ****** be **** ***** ** ******* *** long *** ***** **, *** ********** should ******** ******** *** **** *** then ******* ******** **** *** ****.
************ ******* ** ***** *****, *** they **** ********, ** ** ********* ** ******** with, *** ***** ****. ** * keypad *** ** ** ****** *** zones, *** ****** ** *** ** a ******** ** *** *****. *** example, ** * **** ***** **** to **** ** *** **** ** a ****** ******** ****** ******** *** keypad, *** ****** ******** ****** ** set ** * ********. **** ***, there **** ** * ***** ******* walking ** ***** ** *** ****** detector *** *** ****** ******** ***** into ***** *********, *** **** ** the **** ** ***********. *********, *** ****** ******** **** go **** ***** ********* ***********.
********* ******** *** **** ****** **** ** zone **** ** * ******* *****. These ***** **** * ****** *** sound * ***** *********** ** ********* when *** ***** ** ***** *** are ******* ** *** ***** ** disarmed.
****** ********** ******* *** ******** ***** are:
24 **** *** ******** *****
** **** *** ******** ***** *** those ***** **** ** ********* ************ but ***** ** *** ******* ********* response ** * ****** ****** ******. The **** ****** *********** *** ***** ***** are************* *******.
********** *** ****** ** ********* ***** zones **** ******* ** *********, **** as strobes ** ******, *** ***** ***** do *** ******* * ***** ** sound.
*** **** **** ********** **** ***** zones **** ***** ** ********* **** that ********** **** ***** ***** ** zones, *** **** ****** ** *** nature ** *** ****. *** *******, an ***** **** *** **** * temperature ****** ******* ****** * ****-** freezer ** **** * ****** ****** or * ***** *******.
**** ** **** *** ******** ***** may *** ******* ************ * ****** at ***, **** ** ******. *** example, ** ***** **** ***** **** to ******* * ***** **** ******* a ****, ***** *** ** **** by ********** *** ********* ****** ** a *****. **** **** ** *********** is **** ****** **** *** **** of *** ******* **** ** *-**** compatible lightbulbs *** *-**** ******** *******.
****** ********** ******* *** ** **** *** ******** ********** ***:
- ***** *********** *******
- ************ *********** *******
- ******** *******
- ***** *******
**** **************
*** ***** ********* ******* ***** * wide ******* ** ****** *****, ******** ********** ** ****-**** *** response ** ********* *****. *** *******, a ***** ***** ***** ******* * very ********* **** ** ******** **** a ***** ******** *****.
******* ******* *********** **** ****** ****** dispatchers *** *** *********** **** *******. Therefore, **** *********** ****** ** ** detailed ** ********. ********** *** **** type ** *** ****. *** ***** is ******* *** *** ******* ******* contract ********. **** * ******** ** ****** out, *** ******* ******* ****** *** the *********** **** *** ********'* ****. Included ** *** ******** ** *** name *** *********** ** *** ****, along **** ************ *** **** *** central ******* ****** ** ** *** zone ****** **** * ******. *********, this ******** * **** **** ** people *** ********** ********** ***** ** ** notified, ***** **** * ****** ****** agency ** ******* ***** ******* ** be *********.
***** ****** ** ***** *********** ***** whenever ********. *** *******, "****** **" ** less ********, *** **** **** ****** to * ***** *********, **** “******** Bathroom ******" **. ***** ********** ****** try *** ***** ** *** * first ********* ********* * **** *** **** from * ******* ******* ***** *** the ******** **** ******** ** *****, *** design *** ***** ** **** ****** as **** ** *** ********* ** ********.
Comments (13)
Buddy Carmichael
04/28/17 01:41pm
For those of you who are not super-familiar with this material, I can tell you: this is a very good and accurate treatment of the subject.
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Undisclosed Integrator #1
Good overview of alarm systems. Only thing that i did not see was talk about zones in addressable systems. That would have been a nice addition.
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Mendy lewis
Also, zone doubling with 2 different resistors on same zone port/circuit
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Chris Powell
I agree, this is a very clear & thorough article. Thanks!
On the question of addressable points, they are more and more common on more sophisticated fire alarm system. But, for the same reasons (multiple points on a polling loop, etc), there are some pragmatic uses. A good example is individually identifying a long line of overhead doors along an extensive loading dock. There, a single 2-conductor wire can be run, and every door fixed with an addressable point. (run a 4c line, and you can mix powered devices like motion detectors.
Check out DSC's PowerSeries or MAXSYS panels and their PC5100 add-in addressable zone expanders and AML series of addressable devices.
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