auto phone dialing

I'd suggest a security system. But then, what do I know?

Do you have a control system? This would be extremely simple with AMX or Crestron and an external computer modem.

Most security systems would not handle it. AMX or Crestron would certainly do the trick. An ELK-M1G system could also do it, but for much less money. Rather than a phone call, you might want to consider having the system send you e-mail.

Regards, Robert L Bass Bass Home Electronics

HI I need the cost to be far lower than a home security system as this will be used in many sites. It must also be wireless as the installations are temporary. Anyone with a great idea or anyone who would like to work on this project for $ please email me directly.

Hmmmmmmmm lets see now.

Please provide the following info.

1) Budget in the form of $'s for project, either by individual site or complete.

2) Geographic location as in Country --- State --- City

Answer the above and I will take it under consideration.

Thanks,

I think

modems is your answer. I/O ports to which you can connect a halls effect switch, infrared beam of PIR. See a PIC controlled intruder alarm circuit that was published in April 2002 Everyday Electronics. This article will show you how to connect a N/C device to the I/O port. The zigbee modems can be removed and installed at any other place to provide you with the mobility that you need. I would suggest you get hold of somebody that can make the Zigbee modems from work. If the 2.4ghz can't penetrate enough walls then bridge two Zigbee modems using or use the 433mhz range from

See

for a PIC controlled intruder alarm circuit that was published in

Depending on which doors to 'your' apartments you are talking about, couldn't this monitoring could be seen as an invasion of privacy?