... for camera 3.3-5 meters infrared 4.with triangular wheels visual under vehicle ... ’ Use scope:Used to examine the car, machine, warehouse, schools, factories, equipment ... used to check mirrors airport security, parking area, military, private individuals, etc ... camera: the sensor.Wide-angle lens perspective: 120 °.Infrared distance: 3-5 meters. Economical GRT-V3S Visual Under Vehicle Search Camera ...