Check the listing for details. Extech 445815 Big Digit Hygro-Thermometer. Condition: New, Made in China. Listed at 87.90 USD. Discover the Extech 445815 Humidity Meter with Alarm and Remote Probe, a sleek and efficient tool designed for precise humidity monitoring. Featuring a large triple display that shows relative humidity, temperature, and dew point, this meter is perfect for any setting. It includes a built-in stand for desktop use or a wall mount bracket for versatility. The adjustable visual and audible alarm alerts you when humidity levels exceed your set limits, while it also tracks maximum and minimum readings. The 18" remote probe allows for easy measurement in hard-to-reach areas, making it ideal for humid environments prone to mold. Comes complete with a built-in stand, wall mount bracket, and 2 AAA batteries. Dimensions: 0.78" x 4.3" x 3.9"; Weight: 6.7 ounces. Brand: Extech.