- ******** **********
- *** ** ***** ******* Works
- ***** ** ******* *** Circuit ********
- ********* ** ********
- *****
- ***** *******
- *** *******
- ******* ********** **************
- ******** ** ******
- ********* **********
- *** **** ********** ** Too ****?
- *** **** ******* ** Too ****?
- ***'* ***
***** ******** *** ***** between ** ***** ***** and ******* *******. **** the ******* / ********** of ***** ***** ** broken (*.*., ** ******* window *****), *** ***** is ********* ** *** system ** ***** / enabled.
How ** ***** ******* *****
** ***** ******* ******** of * **** ** wires ******* **** ** alarm ***** ** * sensor, **** ** * magnetic *******. ********** ****** flows **** *** ******** terminal, **** *** ****, and **** *** ******. When ********* ****** *** sensor ** *****, ** completes *** *******, ******** the ****** ** **** down *** ***** **** and **** ** *** negative ******** ** *** panel.
** *** **** ** the *******, *** ******* is ******** ******* *** magnet ****** *** ***** to *****, ******** ******* to **** **** *** reed ** *** ******** side ** *** ******* to *** **** ** the ******** ****.
***** * **** ** wires ** ******* **** sides ** *** ****** to **** ********* ** the ***** ******* * large ******, ***** ** where *** **************** ****. *** ********* flow ****** *** ****** this *******, **** *** positive ******** ** *** panel, ******* *** ******, and **** ** *** negative ********. ******* *** window **** ***** *** reed ** ********, ***** will ***** *** ****** and **** *** **** of *********. ** ***** words, ******* * ****** will ****** ****** *******. ** ** **** open ******* **** ****** an ***** *********.
Loops ** *******
*** *** **** ****** ways ** *** ******** sensors ** ******** ** to *****************.
***** *** ********* ******* it ******* * ***** pathway, ***** ***** **** resistance, ***** ****** ** failure *** ****** ** install. *******, ***** *** only ********* ** **** in *** ************ ***** the ********** *** *** ability ** *** ***** and ***** ******* *** window ****** ****** *** drywall ** *********. ********* requires ************ **** *** general ********** ** *** carpenter. *** ***** ******* needs ** ** **** to ******** * ********** to ******** *** ****** before *** ******* **** is ********* ** ***** installing *******, *** *** carpenter ****** ** **** where ** ***** ***** on *** ******** ** window *****.
******* ****** ** ********* because **** *** ********** and *** **** **** consuming ** *******. *******, adding ****** ** ******* homes ** ********** ********* require **** ***** ** is *** ******** ** open *** ******** ** run * ****** *******.
*** ***** ** ******** exists: ***** ****** *** ITB (**-***-***) ******. *** benefits ** ***** ******* are ***** ***** ******* resistance *** ***** **** wire, *** ** ******** a **** ******* ********** to **** *** ******. By ********, *** ******* are ****** ** ************, have ***** ********* ****** of ******* *** **** can ** **** ** a **** *********** *********, but **** **** ****** total ******* ********** *** require ** ********* ** home *** * **** to **** ********** ******.
Loops *********
*** ***** ***** ***** an ******* ** * loop **** ****** *** windows ** ***** * circuit. ******* ****** *** top **** ** *** bottom **** ** ****** the ***** ****** ** left ****** **** ***** the **** **** ** open. ** ********** ****, a ********** **** * single **** **** *** contact ** *******, ******** the ******* ** ****** around *** ******* ** a ******. *** ********** leaves * **** ** every ******, ***** **** bring *** ******* ** one **** ** *** contact *** *** *** other.
*** **** ** *** pair **** ** *** window ** *** *****, and *** ***** **** to *** ****** ** the ****. *** ********** has *** ***** ** wires **** *** **** of *** ******* ** the *****. *** **** of *** ******* ** the *** ***** ****** has * **** ******* to *** **** ** the ******* ** *** left (***** ** ***** below). *** **** ******* the *** **** ******* and *** ****** **** contact (***** ** *** below) ********* *** ******, as **** ** *** the ******* *** ******.
Field *******
* ***** ****** ** one **** ** **** at *** ****** *** of *** ****, ******* at *** ****** ******. A ******* ********** *** make * ***** ****** if *** ********** *** right. ******* **** ** accessible *** ****** ***************, so * ***** ****** can **** ** **** if ***** ** ********* to **** **** **** from ****** ****. *** example, **** ****** *******, a ********** *** ****** the **** ** *** underside ** *** ***** or ********, *** ** sight *** ****** ***** by ** *********** ***** troubleshooter. ***** ********** ******** wire *** ****** *** strobes ** * ******** to * ****** *******, and **** ***** ******* inside *** ***** ***.
** **** *******, * pair ** ***** (*****) is ******* ** *** alarm *****. *** ***** are ******* ** ******** contacts ** *** ****** sash *** *** *** sash ** *** ***** window, *** **** ***** are ******* ** *** top **** *** *** bottom **** ** *** left ******. *** *** wire ** ******* ** one **** ****, ******* one *** **** *** one **** **** ** be ******* ** *** green *****.
ITB *******
*** *******, ****-***-**********, *** ***** ********** *** ***** ***. ******** ***** *** run ** **** ********** contact, *** **** *** then ****** ** ** the ***** ***** * splice.
*** ******* *** **** easier *** ************* ***********, and **** ****** ** wire **. ****** *** splices, *** ***** *******, to *** *** ******* to **** *****, ** faster **** ****** * splice ** ***** *********** and **** ******** *** how ** **** **** away. **** *** **** much ****** ** ************ if ******** ******* ** the ***, ******* * troubleshooter *** ******* ******* the ******* ****** ******* the *****, *** **** not **** ** ***** find *** ******** *** splice. *******, ******* ********** wires ** **** **** labor *********, *** **** more ****.
Circuit ********** **************
*** ******* ** ** alarm, ********* ********* ******* such ** ********, ******* a ******** ****** ** charge ******* ******* *** wires ** * ******** speed *** ******** ** it **** *** ****.
***** ******* *** * voltage, *******, *** ********** value:
- ******* ** ******** ** volts (*).
- ******* ** ******** ** amps (*).
- ********** ** ******** ** ohms (Ω).
********* * *********** ** how **** *********** ** available *** ***. ***** device ***** *** ****** of ******* ** ******** to *******.
- ** ***** *** *** volts, *** ****** **** either *** ***** ** or **** **** ***********.
- ** ***** *** **** volts, ** **** ****** shut **** ** ********.
********* *** ******** ** which *** ****** *****. All ******* *******, ******, *********** ** * predetermined ****.
- *** ****** **** *** cause *** ****** ** work ****** ** **** voltage, ***** ***** ***** it ** ****** **** down, ********, ** **** erratically.
- *** **** **** ** not ******* ** *** device ****** **** **** current **** ** *** use.
********** ** ******** **** slows *** *******. ******* that ******** ********** ***
- ****** ** ********* *******
- **** ******
- *******
- ****
- ****** ***********
*** **** ********** ** a ******* **** ***** the *******, ****** ** more ********* *** *** alarm ** ******* *** zone ********. ***** ********** increases ** *** ******** as **** **** **, improperly ******** ******** **** a **** *********** ** causing ***** ****** ***** after ***** *********. *********, every ****** ****** ** made ** **** *** resistance ** *** ** possible.
Parallel ****** ******
*** *** ******* ** joining ******** ******** ** a ****** ******* *** parallel *** ******. ******* can ****** ** ******* ************ ********** **** *****. ******** using ******** ******* *** called ******** ********, *** circuits ***** ****** ******* are ****** ****** ********.
** ******* ******, *** ** *** pair ** ***** ** spliced ** *** *** next **** **. **** way, ** ****** *** many ***** ** ***** are *****, *** *** result ** *** ***** that *** ****** ** connect ** *** ***** terminals. ** *******, **** of ***** *** ******* to **** *****. **** makes *************** *******, ******* a ********** *** ****** test * ****** ****** of *** ******* ** a ****. ****** ** typically **** *** ********** a ***** ****** ** devices ** * *******. It ** ****** *** easier ** **** **. The ******** ** **** series ********** * *** more ********** ** *** many ******* *** *********.
** ******* *******, *** ***** **** each ****** ** *** circuit **** ** ******* together ***** *** ***** not ******* ** ******** are ****. ***** ****** conductors **** ** ********* to *** ***** *********, while *** ******* '****' in *** ***, *** connected ** ******** *** each *****. ** ****** how **** ******* *** wires *** ********* ** the *******, ***** **** always ** **** *** wire ** ******* ** the ******** *** *** to ******* ** *** negative.
******** ********** ********* **** *** connecting * ***** ****** of ******* ** * single *******, ** *** circuits **** **** **** of *****. ** ******* reduces *** ****** ** resistance, ******** ***** ***** numbers ** ******* ** be *********. *******, ** is ****** / **** complicated ** *********, **** not **** ** **** incorrectly, *** ** **** difficult ** ************ ***** on.
** * ******** *******, all *** ******** ***** of *** **** ***** are ****** ******* ********, with *** *** ****** being *** ***** **** twists. **** *** ** a ********* ** ******* to ***** *********. ** order ** ************ *** wire ***** ** * branch ** *** *******, a ********** **** ***** undo *** ****** ******.
*********** ***** *********** ******* a '****' *** **** to ****** ******* ** parallel *** **** ** splice ** ******. *******, the *** *********** ** this: **** * ****** splice **** ****** ** too **** **********, * parallel ****** **** ** used. ****** ******** ********, technicians *** **** * circuit ** ***** ** determine *** ****** ** resistance *******.
Measuring **********
********** ** ******** ***** a ******* **********, ** DMM. ** ******* **********, turn *** ******** **** of ***** ** *** Ω (****) ******, *** touch *** ***** ** the **** ***** ** the *******. *********** ******* resistance ** ***** **
- **** **** *** ******* on * ******* *** functioning ********
- ****** ******* ** **** devices ** * **** or ** ***** **** up ***** ******** *****
- ****** ******* * ******* should ** ***** ** series ** ** ********
- ****** * ******** ********** at *** **** ** installation
- ************, ** * **** with * ********** ******* well **** ******** *** indicate * ****** **** or ********* ******
How **** ********** ** *** ****?
***** ** ** ***** answer ** *** ******* amount ** *******, *** consequently *** ******* ****** of **********, **** ****** be ********* ** * single ********* *******. ** a ******* **** ** thumb, **** ********** *** to **** *** ******** resistance ** * ****** circuit ** ~**Ω. ******** that *** ********** **** inevitably ***** ** **** time, ********* ** *** number *** ****** ** sensors ********* ** *** circuit, *** ****** *** nature ** ******* ** the ****, *** ***** composition ** *** ****, and **** *** ***********, which ***** ***** *** wire ** ******* ****** or ******. *** ********* animation ***** *** ******* slowing *** **** ******* are ***** ** *** circuit:
********* ***** ***** ************* have ********* ********* *** what *********** ** ***** condition, *** *** ***** standards *** ***** ** the ***** ******* *** resistance ** * **** circuit. ** * ******* has * ******* ************* higher **** **Ω, ******** either ***** * ******** splice ** ********* *** zone, ******** **** ******* from *** **** *** wiring **** ** * new ****.
**** ********** ****** *** splices ******* ** ****** them ** ****** ** split *** **** ***** on. ** ******* **** been ***** ******** ***** wire ***** ** ***** splices, **** ** *** possible.
How **** ******* ** *** ****?
** ******, ** ********* can ******* *** *** doors ** * ****** zone, *** *** ******* on ******* ****, *** the ****** ********* ** a ***** ****, *** so *****. *******, **** is ***** ** *********** way ** ***** ** alarm. *** **** ******* are ** * ****** zone, *** ****** ** will ** *** *** user ** ****** *** which ****** ** ******* the **** ** ** open.
** *** *** ******* in * **** *** on * ****** ****, the **** **** **** to ***** *** ** them ****** ***** **** to *** *** ******. If * **** ***** to **** * ****** window **** ***** ****** the **** ** *** system, **** ***** **** to ****** *** *** windows ** *** ****, which ** * ****** security **** **** ****** bypassing * ****** ******. If ******* ******* ***** to ******** ****** ** fire ** *** ****'* site, **** **** **** be **** ** **** a ***** *********** ** the ******** ** *** problem, *** * ******** location.
**** ****** *** **** handle * ******* ****** of ***** *** ** the ***. ***** ********** zones ******** ********** *** installing **** *********, ***** add ** *** ******* cost ** *** ************. Using ******** **** ********* may ******* ****** * second ***, ***** ******** adds ** *** ****. The ******** ** **** to ******* ******* ** a ****** **** *** when ** ******** ******* into ******** ***** *** no **** ******, *** becomes ******* **** **********.
Wiring ******
****** ****** ** ******** different **** ****** ***** alarm *******.
- ****** *** ***** ** watts, *** ***** **** all ***** ***** *******
- ***** *** * ******* of *** **** * power * *************
- ***** * ******* ** how **** ***** * device****
- **** ****** *** ***** to ** *****
**** ****** **** **** a ****** ***** ******. However, **** ************ **** for *** ****** ** be ***** ** **** sirens **** ** ******. For *******, * ***** mounted ******* ***** ***** hearing ****** ** ******** at * **** *****, but ***** ** ********* for ************ ********. ** order ** **** ********* volumes **** * ****** output, ********** *** ****** to **** ****** ** either ******** (*** ****** volume) ** ** ****** (for ***** ******). **** can **** ****** ** wire **** ****** ** parallel *** ***** ****** in ******. *** ****** in ****** **** **** resistance **** *** ****** in ********, ** **** there ** **** **********, and ********* ***** *****, forcing *** ***** ** sound ** * ***** volume.
***** ***** ****** ** a ******* ************ ** Ohm's ***.
Ohm's ***
************* ***'* *** ***** alarm *************** **** ******. Ohm's *** ****** **** there ** * ****** relationship ******* *****, ****, and ****, ************ **** volts ****** **** ***** ohms. **** ** **** divided ** *****, *** ohms ** ***** ******* by ****. ****** ********** (ohms) ***** *** ******* (amps) ** ****, *** adding ******* (****) ***** the ********** (****) ** down.
*** ******** *** ** lowering ** ******* *** power ********* ** *** siren ** ** ******* or ******** *** **********. This ****** ** ****** the ****** ** ********* power, ***** ** **** affects *** ********* ** the *****.
************* ***'* *** *** help * ********** ******** and ****** ***** ********, sensors, ********, *** *******. Changing * ****** **** series ** ********, ********* a ***** ****** *** one **** ******* *** same ******* ** * higher ********, ** ****** a ******** *** *** repair ******* **** ** installer *** **** **** understand *** ***'* *** works.
Comments (9)
Undisclosed #1
Nice GIFs! Good Read.
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Marty Calhoun
Nice report
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Undisclosed Manufacturer #2
Now let's start describing the various circuit types. Class A, Class B, Style Y, Style Z
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Mendy lewis
Thanks, very informative
Next wil nice too read about EOL resistors, resistor guide
how to change resistance using more then 1 resistor parallel or series
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Attila Szucs
I'm quiet surprised how the DEOL not came to the picture in this article. DEOL is only 2 wire for a zone, which is really helpful if you plan a system, and its wiring.
One sensor --> One zone. In the past 15 years I have never broke this rule. Many times the cheap series makes hard to find a contact issue caused alarm, and many times the junction boxes tamper switchs can cause sabotage fails. So this is the really-really basic, and never ever use paralells or series. Especially that zone expanders are cheap as hell. :)
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Marty Calhoun
100% could not agree more, you hit the nail on the head Sir.
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Shannon Davis
As a former service technician working on equipment installed in the 80's having multiple devices on one circuit is quite aggravating when trying to troubleshoot false alarms, especially the old window bugs or window foil. Now when systems were installed back then, say the Moose 735/235 there wasn't much choice. In this day and age their really is no excuse for having more than one device on a zone other than say a double door. Zone expanders aren't that expensive and wireless is extremely reliable these days especially the battery life. I installed my first residential system in over 10 years last summer for one of our good commercial customers and I hardwired everything except for the windows. Man what a pain in the arse. The house was only 75% gutted so the prewire was a nightmare as the house had no real chase between basement and attic and the fact there was not air conditioning and it was over a 100 degrees that week. My point is everything was wired separately as I didn't want the next technician to come out when a glass break started falsing and have to figure out which one it was on a circuit of 10. Also I put the EOLR's at each device as well. I will say after doing commercial work for so many years this was my best looking panel install I ever did thanks to some Panduit. Also with the new low current sirens out there really is no need to use speakers and a siren driver anymore either. Good knowledge for those who don't know how to series parallel though. Anyways just my two cents.
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