Lo jack police stolen vehicle detection system USED

Used condition removed from decommissioned police vehicles. This system uses radio waves via 4 roof mounted antennas to detect stolen vehicles via lojack devices in the vehicle. This system is complete with the control head, mounting bracket, power cable, control head extension cable, 4 antenna cables with antennas, and the lojack device. We have very limited knowledge of this device and are only able to test for power and that sound functioned, all buttons function, and the unit appears to work as intended. 
Note multiple sets in stock and may receive a slightly different set. All have light cosmetic wear from routine use including scratches,scuffs, dings, grime, etc.