The SWT2 Water Resistant Thermometer has a fixed probe tip with a protective cover. Features a sealed body for field service and a sharp tip for punching through flex duct. The SWT2 has a temperature range of -58°F to 392°F and has a MAX/MIN function to check temperatures without having to keep an eye in the display. A pocket clip, ergonomic shape and easy to read LCD make measuring temperatures easier, better and faster. With a -58°F to 392°F temperature range and the Auto-Power Off function to conserve battery life, the SWT2 is a smart choice for HVAC/R field service.