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Thread ID: 119696	2011-08-05 13:38:00	12v PIR Motion Sensor for Outdoor Use	Oubadah (16155)	PC World Chat

Post ID	Timestamp	Content	User
1221120	2011-08-05 13:38:00	I need a low voltage PIR sensor that I can mount on a pole near the end of my driveway and trip a relay located in the house to activate a mains lighting circuit. The distance from the proposed sensor location to the house is ~25m. Does anyone know where I can get a device suitable for the job?	Oubadah (16155)
1221121	2011-08-05 14:23:00	Something like one of these?? (www.jaycar.co.nz)	Speedy Gonzales (78)
1221122	2011-08-06 01:06:00	I presume you intend to run a four core LV power cable out to the sensor to supply the power and to connect N/O sensor contacts back to your relay. If so, Jaycar have an excellent IP65 rated product (Cat LA-5042) that will do just what you want with minimal false tripping, but quality doesn't come cheap and it is a shade under $223 for the sensor and swivel mount. A sensor power supply is not included in that price. If the circuits of both the sensor and your relay coil supply are compatible, you can get away with a 3 core lead by commoning one wire of the sensor power supply with one side of the relay coil. Personally I'd run a multi-wire cable and include a fail-safe feed as well, in case somebody cuts the cable. The simplest way to do this is with a held-on relay with NO contacts that will close if the cable is cut and activate the lights and or sound a tamper alarm if cut in daylight. Cheers Billy 8-{)	Billy T (70)
1221123	2011-08-06 10:21:00	That LA-5042 looks like exactly what I'm after. Thanks guys, I don't know why I didn't think to look on Jaycar. Hmmm, so what kind of wire to you think I should at. I was hoping to get away with using surplus I already have. I have some RG6, but not enough for two runs, and all the CAT6 I have is for in-wall use. If I buy some gel filled CAT6, do you think that will do? 90% of the line will actually be run in storm water drains. It's the only feasible route into the house as it can use the holes made for the mains water supply (which has also been fitted into the drain).	Oubadah (16155)
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