2 way & intermediate pir is there such a beast

[ruston]

A low level light on permanent ,switched to high level when activated .

 

[the pict]

Have you got a maker or product info as I get nothing

 

[ruston]

This at a quick look.
https://www.cibse.org/getmedia/e86f...Residential-Buildings-(LG9)_2015_IET.pdf.aspx
The ones I have seen are linear though.
Contact them I am sure they will be able to help you .
What type of lights are fitted?
Edit . And this .
Corridors - https://www.fagerhult.com/Lighting-control/corridors/

 

[Leesparkykent]

CP electronics make sensors with all these functions that can be programmed by their remote. We use them all the time for warehouse lighting. What's described in the above posts is called step down illuminance.

10a 230v PRESENCE DETECTOR RECESSED - https://www.mylights.co.uk/p/PIRANDPRESENCEDETECT/CP-Electronics-PIR-Presence-Detector-Direct-Dim-Time-Delay/EBDSPIR-DD

CPE COMPACT INFRARED PROGRAMMIMG HANDSET - https://www.mylights.co.uk/p/PIRANDPRESENCEDETECT/CP-Electronics-IR-Programming-Handset-For-Presence-Detectors/UHS5

Obviously the light fittings would have to be dimmable to be compatible.

 

[IzzyS]

Have you got a maker or product info as I get nothing

Try searching for "Corridor function". Tridonic are one supplier of these type of ballasts.

 

[davesparks]

OK what exactly is high low lighting as a google finds nowt

Just look for light fittings with corridor function, most commercial type fittings have this option these days

 

[Toneyz]

No, but as @snowhead has said the corridor may not be safe plunged into darkness.

Does this corridor have any windows if not just leave one or two lights on so, not in complete darkness?

 

[David M]

Does this corridor have any windows if not just leave one or two lights on so, not in complete darkness?

Unfortunately this is not always practical, especially if its long corridor, used by the public frequently throughout the day and evening.

 

[Daniel Coe]

I may be wrong, but I thought as a PIR will turn on then turn off again, there is no need to wire it like a conventional 2 way system. Just take a PL to each one and then a feed to the lights. If any activates then the lights come on. When they are all timed out the lights are off. Or am I over simplifying it?

Good point, so if I have 6/7 switches to change over to PIR type switches in a stairwell in a small block of flats, obviously the first switch will have a permanent feed and switch line, but between that and the other switches are 3 core and earth strapper cables… So how would you recommend they be connected? One of the core’s say the brown could be carried over to each switch as the permanent feed, but which core would act as the switch line? If that makes sense… Would really appreciate it if could get back me.
Kind regards Daniel

 

[mainline]

Change the switches for time lag ones.
Job done.

 

[Devonchris]

Good point, so if I have 6/7 switches to change over to PIR type switches in a stairwell in a small block of flats, obviously the first switch will have a permanent feed and switch line, but between that and the other switches are 3 core and earth strapper cables… So how would you recommend they be connected? One of the core’s say the brown could be carried over to each switch as the permanent feed, but which core would act as the switch line? If that makes sense… Would really appreciate it if could get back me.
Kind regards Daniel

I

Good point, so if I have 6/7 switches to change over to PIR type switches in a stairwell in a small block of flats, obviously the first switch will have a permanent feed and switch line, but between that and the other switches are 3 core and earth strapper cables… So how would you recommend they be connected? One of the core’s say the brown could be carried over to each switch as the permanent feed, but which core would act as the switch line? If that makes sense… Would really appreciate it if could get back me.
Kind regards Daniel

Are you fitting pir in place of the switches? Do you have n at the switch? Is it a given that all lights are operated from all switches, or can you zone them?

I would remove switches, wago in on position, fit blanking plate, then remove each light fitting and fit a pir in best position possible. Refit light, then each light has its own sensor. Without seeing the layout and light positioning its impossible to know if this would work for someone moving around the staircase. As suggested earlier, it may be appropriate to fit dual intensity light fittings.

 

[mainline]

I
Are you fitting pir in place of the switches? Do you have n at the switch? Is it a given that all lights are operated from all switches, or can you zone them?

I would remove switches, wago in on position, fit blanking plate, then remove each light fitting and fit a pir in best position possible. Refit light, then each light has its own sensor. Without seeing the layout and light positioning its impossible to know if this would work for someone moving around the staircase. As suggested earlier, it may be appropriate to fit dual intensity light fittings.

Changing the switches to time lag ones is a no-brainer.

No neutral pir wall switch sensors are available.

There is also the option of using wireless ones.