adding pir's to a system

**lee** · 18-06-09, 10:04 PM

Hi Guys
i am considering adding a pir to an existing system to cover an adjacent room.
is it as simple as just wiring one in parallel with an existing pir?
or is it a bit more complex than that?
cheers lee

**ZadeMan** · 18-06-09, 10:09 PM

if you want to add an extra pir and conect it to an existing pir, the power wires (red + black) are connected parrallel, and the zone wires, ( blue + white ) are connected in series.

**lee** · 18-06-09, 10:12 PM

ok , thanks for the quick response.
i will have a look at that on the weekend

**ZadeMan** · 18-06-09, 10:15 PM

if you have spare zones on your alarm , its best to run a new cable to the alarm box and connect the new pir to a new separate zone.
do you know what brand/model alarm system you have?

**lee** · 19-06-09, 02:50 PM

its a NESS
about 20 years old it seems.
i noticed it had 8 zones on the terminal strip and a few 2k2 ohm resistors on some of the zone terminals?
and lotsa wires..............all labelled of course.

**watchdog** · 19-06-09, 03:01 PM

Quote:

Originally Posted by lee

its a NESS
about 20 years old it seems.
i noticed it had 8 zones on the terminal strip and a few 2k2 ohm resistors on some of the zone terminals?
and lotsa wires..............all labelled of course.

If the zones with resistors have no other cables on them then they are unused (if there are cables on them they may be used for smoke detectors) If they are the last couple of zones ( eg 7 or 8 etc ) they are probably programmed as instant. If this is suitable then it is just a matter of cabling up a PIR to them & no need for any programming

18-06-09, 10:04 PM	#1 (permalink)
lee Senior Member Join Date: Jan 2008 Location: Melbourne Posts: 247 Gameroom cash: $1591 Thanks: 12 Thanked 11 Times in 10 Posts Rep Power: 7	adding pir's to a system Hi Guys i am considering adding a pir to an existing system to cover an adjacent room. is it as simple as just wiring one in parallel with an existing pir? or is it a bit more complex than that? cheers lee

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18-06-09, 10:09 PM	#2
ZadeMan Member Join Date: Jan 2008 Location: AUSTRALIA Posts: 40 Gameroom cash: $907 Thanks: 0 Thanked 1 Time in 1 Post Rep Power: 3	if you want to add an extra pir and conect it to an existing pir, the power wires (red + black) are connected parrallel, and the zone wires, ( blue + white ) are connected in series.

18-06-09, 10:12 PM	#3
lee Senior Member Join Date: Jan 2008 Location: Melbourne Posts: 247 Gameroom cash: $1591 Thanks: 12 Thanked 11 Times in 10 Posts Rep Power: 7	ok , thanks for the quick response. i will have a look at that on the weekend

18-06-09, 10:15 PM	#4
ZadeMan Member Join Date: Jan 2008 Location: AUSTRALIA Posts: 40 Gameroom cash: $907 Thanks: 0 Thanked 1 Time in 1 Post Rep Power: 3	if you have spare zones on your alarm , its best to run a new cable to the alarm box and connect the new pir to a new separate zone. do you know what brand/model alarm system you have?

19-06-09, 02:50 PM	#5
lee Senior Member Join Date: Jan 2008 Location: Melbourne Posts: 247 Gameroom cash: $1591 Thanks: 12 Thanked 11 Times in 10 Posts Rep Power: 7	its a NESS about 20 years old it seems. i noticed it had 8 zones on the terminal strip and a few 2k2 ohm resistors on some of the zone terminals? and lotsa wires..............all labelled of course.