Two PIR sensors to work same lights | on ElectriciansForums
Click here to remove these ads

Two PIR sensors to work same lights

Post new thread

Discuss Two PIR sensors to work same lights in the UK Electrical Forum area at ElectriciansForums.net

N

needsomeadvice

-
Joined
Nov 6, 2018
Messages
10
Reaction score
0
Location
london
Hi all

Does anyone know of PIR sensors that can be connected to switch on the same lights.
Basically, i need to install 2 sensors located around the corner from each other and either of these two sensors need to switch on 4 led wall lights.
Spoke to Knightsbridge, they say that this can't be done as you would be sending a switched live back down to the other sensor that hasn't activated.

Has anyone installed PIR's like this without any issues? If so, what ones have you installed?

Thanks for any input.
 
Sort by date Sort by votes
I have done exactly the above with the standalone sensors from screwfix and they have been working fine for around 4 years now. They switch approx 10 x LED's going up a pathway.
[ElectriciansForums.net] Two PIR sensors to work same lights
 
Upvote 0 Downvote
needsomeadvice said:
Hi all

Does anyone know of PIR sensors that can be connected to switch on the same lights.
Basically, i need to install 2 sensors located around the corner from each other and either of these two sensors need to switch on 4 led wall lights.
Spoke to Knightsbridge, they say that this can't be done as you would be sending a switched live back down to the other sensor that hasn't activated.

Has anyone installed PIR's like this without any issues? If so, what ones have you installed?

Thanks for any input.
Click to expand...

As long as the total load of lights does not exceed the switched rating of one of the PIR'S then there is no problem in paralleling the outputs from them.
 
Upvote 0 Downvote
happyhippydad said:
I have done exactly the above with the standalone sensors from screwfix and they have been working fine for around 4 years now. They switch approx 10 x LED's going up a pathway.
View attachment 48040
Click to expand...

Hi HHH. Am I reading your drawing correct? It looks like your timer output is in parralel with your PIR outputs. Is that what you wanted? PIR operation with a timed override?
 
Upvote 0 Downvote
TJ Anderson said:
Hi HHH. Am I reading your drawing correct? It looks like your timer output is in parralel with your PIR outputs. Is that what you wanted? PIR operation with a timed override?
Click to expand...
The customer wanted them to come on at a certain time in the evening and then switch off, but also wanted them to be constantly (at night) on a PIR from top of drive and bottom of drive.
 
Upvote 0 Downvote
Nothing wrong with that unless Knightsbridge are suggesting the 'inrush current' maybe a problem and not because of sending a s/l back to the other sensor.
When they start 'playing up', (they invariably do!), you get the ladder up to investigate the sensor and it will always be the other one!
 
Upvote 0 Downvote
telectrix said:
so what's wrong with sending a S/L to the other PIR. it won't explode.
Click to expand...
I have installed some pir floods before that didn't play well together, they were suppose to share a SW live so they could turn each other on but they would flash repeatedly when ''back feeding' each other.

I have no idea what caused it but I'm going to take a stab in the dark and say back feeding the SW live side of PCB makes a relay chatter.
 
Upvote 0 Downvote
Blissof89 said:
I have installed some pir floods before that didn't play well together, they were suppose to share a SW live so they could turn each other on but they would flash repeatedly when ''back feeding' each other.

I have no idea what caused it but I'm going to take a stab in the dark and say back feeding the SW live side of PCB makes a relay chatter.
Click to expand...
Probably a solid state switch on the output rather than a relay.
 
Upvote 0 Downvote
Yes, I have three of them on one circuit around the house controlling six LED 15W wall lights. I also have an overide switch for manual operation, never needed to use it as the misses doesn't spend too much time collecting firewood from the shed.
They have been up and running without incident for the last 2 years.
 
Upvote 0 Downvote

Reply to Two PIR sensors to work same lights in the UK Electrical Forum area at ElectriciansForums.net

Similar Threads

S
How can I wire 3 lights to 2 PIR sensors
That will work fine as long as the Pirs use relay switching, some don't.
Replies
2
Views
345
mainline
mainline
J
  • Question
Multiple Occupancy sensors. {More than 3}
Well conventional wisdom says that you just parallel ('piggy back') as many switch sources as you need, all fed to the contactor coil. If for...
Replies
4
Views
824
Rockingit
Rockingit
S
Looking for a 'touch' switch for bathroom wall light.
Thank you, both. Seems like common sense may have prevailed, and the fellow is indeed going for one of the modern mirrors you mentioned...
Replies
3
Views
189
Shooby
S
timhoward
Testing large amount of PIR controlled lighting
You would have thought they'd have a switch to flick on and off to engage an override. Not on each PIR but an actual light switch
Replies
5
Views
925
KungFuTurkeyLeg
KungFuTurkeyLeg
Pedro1875
  • Question
BATHROOM WIRING WITH PIR SENSOR
A double pole switch is one solution, typically though they are 20A isolator or grid switches. Live feeds both poles and the PIR switch. One...
Replies
3
Views
2K
pc1966
P

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

Tilers Community
This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
NHS Forums | Forum for NHS Staff and NHS Patients
Back
Top
✖
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock    No Thanks