What is the difference?

Bikerman2019 · 22-02-2021 9:03pm #1

I was looking at a PIR recently where it mentioned load. I dont recall the exact values, but you will get the idea.

It was for connection to yard lights, and mentioned max load of 500w or 300w if LED lights.

Why is there a difference in these lights?

Thanks

Andrea B. · 22-02-2021 9:59pm

Just read that LED have a high starting current. That was news to me. Florescents used to be the baddies at both make and break.
So the PIR switch contacts undergo more stress for LED switching on.

Chomper. · 24-02-2021 3:17pm

I looked at a few and they still seem to specify incandescent/fluorescent rating

Hadn't noticed or heard of the led de-rating. It would be unusual to max-out the rating with led unless you were controlling floodlights

Bikerman2019 · 24-02-2021 7:14pm

I looked again at the spec sheet. It mentioned 1000watt for normal or 300 watt for LED load. This is it.

https://www.screwfix.ie/p/zinc-outdoor-pir-sensor-180/388ft

Chomper. · 24-02-2021 7:40pm

Bikerman2019 wrote: »

I looked again at the spec sheet. It mentioned 1000watt for normal or 300 watt for LED load. This is it.

https://www.screwfix.ie/p/zinc-outdoor-pir-sensor-180/388ft

300 watt fluorescent

They're junk anyway

Bikerman2019 · 24-02-2021 8:12pm

So it was fitted on a farmyard to replace a bogey one. With the wind on the mountainside, it is going on and off like a pelican crossing.

What would you use instead? For an exposed farmyard with heavy winds.

Ideally with a good "reach" of the sensor.

Thanks

Chomper. · 24-02-2021 8:29pm

Bikerman2019 wrote: »

So it was fitted on a farmyard to replace a bogey one. With the wind on the mountainside, it is going on and off like a pelican crossing.

What would you use instead? For an exposed farmyard with heavy winds.

Ideally with a good "reach" of the sensor.

Thanks

Something more expensive for a start

Bikerman2019 · 24-02-2021 8:41pm

Chomper. wrote: »

Something more expensive for a start

That doesnt really help....

Chomper. · 24-02-2021 9:32pm

Bikerman2019 wrote: »

That doesnt really help....

https://www.screwfix.ie/c/electrical-lighting/motion-sensors/cat4910012

They're all junk

You'll have to look elsewhere , Steinel PIR at electrical wholesalers

10-10-20 · 25-02-2021 12:59am

This one's junk: https://www.screwfix.ie/p/zinc-twin-pir-sensor-360/718fh, AKA the Robus Proton. Take my word for it. Mine only triggers during dusk.

This one is recommended over the previous:
https://www.eurosales.ie/products/id-2221.html?filter_set[]=109,4991,5000

Bikerman2019 · 25-02-2021 1:29am

10-10-20 wrote: »

This one's junk: https://www.screwfix.ie/p/zinc-twin-pir-sensor-360/718fh , AKA the Robus Proton. Take my word for it. Mine only triggers during dusk.

This one is recommended over the previous:
https://www.eurosales.ie/products/id-2221.html?filter_set []=109,4991,5000

Thank you.

Lenar3556 · 25-02-2021 2:19am

Bikerman2019 wrote: »

Thank you.

BEG Lux would be ok
Steinel would probably be what I would go for.

What is the difference?

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