The OptioLaser 200 Series sensor from Hawk Measurement can be used for blocked chute detection, barrier detection, machine detection, stock pile monitoring and point level measurement. It incorporates an infrared 905 nanometers time-of-flight technology for reliable, accurate distance and level measurements. The sensor provides instant warning of level and position detection, has no moving parts and no calibration is needed. The OptioLaser can measure to most targets within its specified range, even penetrating dust and fog. 888-429-5538; www.hawkmeasure.com