Recommendation for microwave occupancy sensor

[Chancy99]

Hi All -

I'm looking for a room occupancy sensor. Needs to be small, and able to detect someone entering a room from a good 8m-10m away. This is for simple interfacing to a microcontroller.

Siemens makes a really nice little microwave sensor, the KMY24, but it doesn't appear to be available from any of the usual US distributors. Something like that would be ideal.

Any ideas ?

Thanks -

Dean.

 

[IRstuff]

Most home security motion sensors use a combination of microwave and PIR. They generally use relay outputs, though.

TTFN

 

[RAMConsult]

Try this link to a robotics site:

http://massmind.org/techref/robotics.htm