Abstract: An electrically powered security system for monitoring and controlling access to a protected area and having multiple levels of alert signal commensurate with the level of security threat to the area; a siren for communicating multiple levels of alert signal, both visual and audible, progressively including: a low level, medium level and full level alert consisting of a voice warnaway, a series of audible chirps, or blinking lights; an electrically erasable and programmable read only memory for permanently storing system operational parameters and a controller for using the operational parameters for controlling the operation of security system, the security system including a remote transmitter to remotely test all input sensors and remotely disable specific sensors from operation, thus having control of any combination of variable audio and/or audio-visual alarm response, the security system further including a light control for automatic light engagement and mutual cooperation with windshield wipers.