Standalone PIR with 50w LED security lights problem

[simongii]

Hi Everyone,
I have bought some standalone PIRs and some (cheap) LED floodlights. I've just rigged a quick test up inside the house and I'm having a major problem.
The reason I rigged it up was just to see if there was an override on the PIR (Ranex 180 degree outdoor PIR from amazon); I just wired it to a plug and was listening to the click to see if the double on/off left it on. It didn't....but that wasn't the issue.

I then wired it up to one of the lights. On power on it starts in on state - which I think is normal. Then after a while it clicks off and immediately clicks back on. It does this in an indefinite cycle. I've covered up the light so there's no shadow/etc in case it was anything like that. I have multiple lights and multiple PIRs and swapped out both to the same affect. Wiring a normal incandescent to the PIR works perfectly fine. It's as if the LED being the load is causing something to trip in the standalone PIR.

Has anyone had any experience of this? Are there PIRs that are suitable for LEDs? I thought it was just a switch so never even considered the load on the switch would effect how it works.

Cheers,

SImon

 

[flameport]

Some PIRs have electronic switching, which is not suitable for certain kinds of lighting. Others have a minimum load. Others are just junk.

The Eterna ones here: http://www.eterna-lighting.co.uk/products.asp?cat=security in both 110 and 180 degrees do work with LEDs.