Im thinking of installing one. any recommendations I dont want to pay a monitoring service thinking i just need 3 door sensors 1 or 2 motion detectors and an extremely loud alarm horn to mount under the eve of the house. Id rather have the loud alarm than monitoring. ADT takes 3-4 minutes to even call and ask if its a false alarm before alerting the police then the police have a response time to figure in. A good thief can rob you blind before ADT even dials your number. anyone gone this route? any brands to look into? dont care for cameras or wifi just plane old loud siren alarm if the doors open or anything moves inside.