The Type TL measures the profile of an object passing transversely through the field of view. This model can acquire information with a resolution of 1 in. (25 mm) depending on the selected model. For better efficiency, the distance between transmitters and receivers must not exceed 12 feet (4 m). The Type TL poles the state of each cell at 1,000 scans per second. This scanner is designed to operate under various temperature conditions from -40°F to 122°F (-40°C to 50°C) without the need of heating or cooling.