Abstract: The invention disclosed herein is an apparatus and method for protecting outdoor air conditioners and other valuables stored outside from theft. The invention is composed of an electronic circuit which sounds an alarm when a sensor cable attached to the inside of the air conditioner is severed. The components of the Positive Action alarm system are: 1) a source of 110v electricity, 2) a power switch, 3) a step down transformer to convert 110v electricity to 24v electricity, 4) a plurality of terminal blocks, 5) a red and green status light, 6) an arming switch, 7) a sensor cable, 8) a plurality of electrical contacts, and 9) an alarm circuit containing an alarm bell and alarm light. All of the components are connected by electric wire. A number of air conditioners can be protected from theft by the invention disclosed herein.