outside alarm system

[oldspark]

Hi: looked at a job today, house in the country, you drive over a small bridge towards the drive,approx 30 Mtrs from here across the drive to the front door. He would like some form of sensor at the bridge that sets of an audible alarm in the property if a vehicle drove in.

Anyone point me in the right direction to get something suitable.

Cheers
Os

 

[astrab00y]

external pir with a radio board and a bell inside the house.

 

[breezer]

oldspark posted this in the worng forum, he posted again in the correct forum, but the mods have not yet deleted it

 

[Igorian]

oldspark posted this in the worng forum, he posted again in the correct forum, but the mods have not yet deleted it

The mods don't patrol here cos we are so well behaved.

 

[tim west]

Or it's too technical for them