Hikvision DS-TMG035 trigger radar for barrier gates. It replaces the loop detector on the approach side: when a car reaches the lane the radar signals the barrier or the controller, with no slot cut in the road. 79 GHz, 50 ms response, range 0.3 to 6 m and width 0 to 2 m set from the phone app over Bluetooth, direction aware for mixed entry and exit lanes. IP67, -40 to +85 °C.