A compact electronic device for measuring temperature and humidity in the laboratory or growroom, with a large, easy-to-read LCD digital display. While not as accurate as larger, more expensive analog or digital units, we recommend the ESHYD and use it in our own growrooms. Can be hand-held for spot checking or set in a fixed location with the included wall mount. Measures 32–122 °F (0–50 °C) and 25–95% rH. Temperature accuracy of ±2 °F from 32–104 °F, humidity accuracy of ±5% rH from 40–80 °F, ±7% rH otherwise. Includes "Max-Min" controls for both temperature and humidity. Requires 2 AAA batteries (batteries included).