If you want to go with the do it your self wireless security system route (about $300, takes about 4 hours to install in a small office) you can get a "sensaphone" which will call up to 4 numbers in case of loud noise (burgler alarm ,smoke alarm) or any other of abnormal situation (power failure) . I have temperature sensors attached to the medication refrigerators and freezers. THe sensaphone unit is over $300, but the advantage is that there is no monthly monitoring fee. I have been alerted numerous times about the refrigerators being warm (usual cause - nurse leaving door slightly ajar) and saved $1000's in avoiding spoiled medication.
I agree the ADT monitored system is better, but I live in a low crime area. I still have stickers on the exterior doors saying we have some central monitoring system.
