• The Virtual Loop vehicle detectors are a great solution for sites where ground loops cannot be installed, such as when the road surface is damaged or unsealed, where there are cobble stones, or above drains or pipes.• The OVS-01GT detects the presence of a small or large stationary or moving vehicles within 5.5 meters while ignoring human traffic. It is easy to install; unlike ground loops, no civil works are required, and the device is mounted 500 mm from the ground. The OVS-01GT connects to an automatic gate, barrier or industrial door operator, and includes menu programming, five sensitivity settings and five human cancelling selections, all with one-button calibration. It suits simple gate activation applications as well as being part of state of the art parking systems.