Specifications include, but are not limited to: Magnetometer: Banner Engineering - DX80DR9M-HMD 900Mhz Multihop M-gage Sensor (no substitute). 3-Axis Magnetometer 900MHz radio communications. Radio Range of 1000 feet. (dependent upon environment, line of site and bury depth) Fully potted and sealed unit containing power source, sensor, radio and antenna. Ability to be placed below pavement surface, sealed, and fully function to avoid damage by snow removal operations. Report on Change of State as it occurs, based on user defined threshold limits. Ability to Learn and Store Ambient Magnetic Field as a Baseline Measurement. Ability to Sense a Vehicle in stopped/parked condition and not lose or reset Ambient Magnetic Field Baseline. Ability to communicate data directly to controller unit within range or communicate to repeater station to pass data to main controller unit. Operating Range of -40 to 185 degrees Fahrenheit. Powered by D-Cell (or larger) Lithium Battery Integrated into unit.