The HA2 is a multipurpose processor that can operate either Pulsors or Basic Probes. This processor has two zones each with an individual sensitivity adjustment and individual output. When used with the Pulsor motion sensor, each zone can accept four sensors. When used with Basic Probe vehicle sensors, each zone can accept one probe. When using basic probes, the probes can act independenlty for non-directional responses or in conjunction for directional applications.