A helipad on a ship or drilling platform is illuminated with floodlights to make the position of the helideck visible to the pilot. When the helicopter has landed, the lights may dim or go out completely. For this, the LAM sensors are used to detect the presence of the helicopter within a set distance range (also called window). Because the laser measures a distance, the sensor, unlike radar sensors, also detects stationary objects and continues to function reliably in severe weather conditions. Also available in explosion proof housing.