Abstract: A home alarm system for use by an authorized user while in the home, manual input commands to the system being required by the user as events around the home might occur for proper system operation. The system includes a programmable microcomputer having a specific preprogrammed operating logic and a multi-key control panel operably connected to the microcomputer. By manually depressing an arming key, the microcomputer is activated to initiate a first time delay. This would typically be done by a user at the ring of a doorbell or upon hearing strange noises and the like. Unless a multi-key disarming code is entered before the end of the first timing delay, a warning signal is activated and continues for a second preprogrammed time delay. Again, unless the disarm code is timely entered before the end of the second time delay, a very loud siren or other wide area broadcast alarm signal is activated.