Gate Audible Sensor

[HERTS P&D]

Hi i'm not sure if this is the correct wording, but I would like to fit sensor on my front driveway so that if anyone crossess the 5m between the 2 walls, a sensor would make a noise indoors.

Anyone got any links?

I do have 240v at the front wall due to lights in the wall pillar.

Andy

 

[redpis]

http://www.ultrasecuredirect.com/acatalog/900m_Working_Range.html

Just did a quick google for ya.

 

[Alarm]

Trouble with most of those shown is a cat/dog/fox will generate a false alarm.
These have been about for years for exactly this purpose, http://www.takex.com/twin-c-4633.php used on perimeter security applications and scaffolds. Not cheap at roughly £190 a throw but the best.

 

[9651]

Yeah we use these (much of a muchness)

http://www.optex.co.uk/site/temPW3_001.asp?intPage=1750&intLevel=6

Best to hook into an existing alarm, then prog as a 'chime' point.

Or it can be made standalone with a small PSU/timer relay to switch a buzzer for instance.