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Orhdposs

Tenderfoot
Mar 27, 2020
95
43
64
Essex
Might be right for this site but, dose not matter where I set my PIR sensor for the garden my neighbour seems to set it off, so can any one help me with ground level sensors so that only the dog or some other intruder at ground level will set off not people from other garden sensor set 2m high to cover back door.
 

Orhdposs

Tenderfoot
Mar 27, 2020
95
43
64
Essex
Would like to be more pro active dose any one know of a low level sensor like break beams but cover a bigger area.
 

BJJJ

Native
Sep 3, 2010
1,470
122
North Shropshire
Retro reflective photoelectric infra red sensor. Bounces a beam off a reflector, if the beam is broken the sensor switches the light. you can set this at any desired height . can be used over considerable distances also. Fairly cheap to buy.
 
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Oliver G

Full Member
Sep 15, 2012
101
33
Melbourne, Derbyshire
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mikehill

Full Member
Nov 25, 2014
636
121
Wigan
Retro reflective photoelectric infra red sensor. Bounces a beam off a reflector, if the beam is broken the sensor switches the light. you can set this at any desired height . can be used over considerable distances also. Fairly cheap to buy.
There’s a house near me that has one of these. The beam is so obvious a burglar would just step over it :biggrin:
 

Oliver G

Full Member
Sep 15, 2012
101
33
Melbourne, Derbyshire
Yes I was think and in an arc how do you step over that?
You get some that are a laser gate, you can see the emmitter/receiver and the reflector. There is one near us in the outside of a wall that you would break as you climb the wall. You see them often in shops either as an alarm or as people counters.

Sent from my SM-G960F using Tapatalk
 
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