Wireless Vehicle Detection

A4 - Car SensorA4A4 - Car SensorA4-H - HGV/Truck sensorA4-HA4-H - HGV/Truck sensor
B4 - Car sensorB4B4 - Car sensorB4-H - HGV/Truck sensorB4-HB4-H - HGV/Truck sensor
G4 - GatewayG4G4 - GatewayR4 - RepeaterR4R4 - Repeater