Has anyone installed one of the new "Brackenheath ispot LED Floodlight with Microwave Sensor" devices yet? (They come on a range of wattages). http://www.screwfix.com/search?search=Brackenheath++Microwave In particular I'm wondering about the merits of microwave vs PIR detection in an outdoor setting. I know microwave is great indoors, where things don't get blown around, but I'm not so sure about how suitable it's going to be outdoors, where trees move, and then there's a strong wind all kinds of things get blown around the garden. A PIR detector will only get triggered by warm bodies, but surely a microwave sensor will be triggered by all kinds of debris. Or am I worrying unnecessarily? They aren't cheap, so it'll be an expensive mistake if I get this wrong. Thanks, Paul.
No, they work in relation to size apparantly, one advantage microwave can penetrate as glass and plastic, so the security light will come on, pir sensor won't. Also there should be no nusiance tripping by animinals, compared with a microwave sensor, it also unafected by temperature change that pir sensor can be. http://www.briticent.co.uk/assets/Uploads/ispot-sensor-PIR-vs-Microwave.pdf
That PDF makes me even more worried actually, as it says the sensitivity can't be adjusted! I hear what you're saying about size, but a tree swaying in the wind isn't exactly little! Thanks, P.
It will be adjustable for the length of time it can come on, & most likely has dawn to dusk adjustment (sensitivity) as well. The SF listing says it's adjustable, with microwave sensor, you don't sensitivity adjustment as the sensor work in totally different way to a pir sensor, but you need sensitivity to adjust & activate the light. Well this link show them adjustable for time & sensitivity. http://www.briticent.co.uk/products/thisProduct/8759
Thanks. So going back to my original question has anyone here fitted one of these in a garden yet? P.
No, only just seen then, but very tempted to try one. Just read spec sheet, I see there is a warm white & daylight versions available, only hope SF are stocking Daylight version. The time delay: 2sec - 5min Lux level: 2- 50 lux & a 2 year warranty, not too bad.
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