Combined hi-lo/dusk-to-dawn and PIR for outside light

IM

We have outside lights with separate sensors that combines a dusk-to-dawn photocell and a PIR. The idea being that at dusk, the lamp comes on at a dimmed level so that folk can see where the front door is - and then as someone approaches door the lamp goes up to full power, so you can actually see what you are doing.

Have had these down the years, and they have always been temperamental - in fact the one at the side of the house now only operates as a PIR - and I've needed to replace them a couple of times.

The one at the front of the house has now 'gone' but it seems these units are not made any more - you can buy stand-alone photocells, and stand-alone PIRs but not a combined unit.

Could I buy one of each, and wire them up so that the PIR over-rides the photocell, and turns the light on full when someone approaches? If so, any clues on how I would wire it up?

Alderbank

IM said:

The one at the front of the house has now 'gone' but it seems these units are not made any more - you can buy stand-alone photocells, and stand-alone PIRs but not a combined unit.

Seem to be plenty of these around. 
Perhaps you are not using the right search terms?
I searched for dual light level PIR and hi-lo PIR.

Just a few examples:

https://www.universal-lighting.co.uk/products/dual-light-level-led-dusk-dawn-white-outdoor-pir-wall-light-tall/

https://www.amazon.co.uk/PowerSave-Illumination-Lights-Movement-Sensor/dp/B07CVFBDW7?th=1

https://www.electricpoint.com/asd-led-half-lantern-light-hi-lo-pir-8w-cool-white-black-opal.html?utm_source=googlebase&utm_medium=datafeed&utm_campaign=google-shopping&gclid=Cj0KCQjwpeaYBhDXARIsAEzItbF-vtjYLp-7iGr1h99N0_tC2lCUXqnRXRFUi2g5RtIXa96o3L6E69IaAvohEALw_wcB

IM

Alderbank said:

IM said:

The one at the front of the house has now 'gone' but it seems these units are not made any more - you can buy stand-alone photocells, and stand-alone PIRs but not a combined unit.

Seem to be plenty of these around. 
Perhaps you are not using the right search terms?
I searched for dual light level PIR and hi-lo PIR.

Just a few examples:

https://www.universal-lighting.co.uk/products/dual-light-level-led-dusk-dawn-white-outdoor-pir-wall-light-tall/

https://www.amazon.co.uk/PowerSave-Illumination-Lights-Movement-Sensor/dp/B07CVFBDW7?th=1

https://www.electricpoint.com/asd-led-half-lantern-light-hi-lo-pir-8w-cool-white-black-opal.html?utm_source=googlebase&utm_medium=datafeed&utm_campaign=google-shopping&gclid=Cj0KCQjwpeaYBhDXARIsAEzItbF-vtjYLp-7iGr1h99N0_tC2lCUXqnRXRFUi2g5RtIXa96o3L6E69IaAvohEALw_wcB

Thanks for the reply, but they're not what I'm after.

It's a stand-alone unit, to go with an existing light fitting that I need replacing - those are all light fittings with sensors built-in.

Alderbank

You need to look for what lighting engineers call 'corridor function'.

As you are discovering now, today's demand is really for integrated luminaires where sensors are built in for ease of installation. Also in the days of filament bulbs it was easy to achieve variable light control. Unfortunately, designing separate controls which will reliably vary the light output of a range of different LEDs is much more difficult.
Units are available but really for professional use, so professional prices to match and interfaces which require technical skill and experience to match with LEDs.
Keywords to look for include Tridonic and DALI

IM

Thanks for the reply - given how complicated all that sounds, I think I'll be replacing my light fitting 

With these type of integrated luminaires, how much control do you have over the sensor's 'field of vision'?

We have an open-sided canopy outside our front door, with the existing light fitting on the wall and the remote sensor on the canopy, pointing towards the front garden path. I'm worried that with an all-in-one unit, the light won't come on until you are basically at the front door - rather than as you walk up the path.

This pathetic attempt at a diagram may (or may not) help explain what I mean...