Measure and display environment temperatures and humidity readings in a matter of seconds with this compact Thermo-Hygrometer Pen. Model DRH122 is designed for simplicity and one-handed operation. This economical instrument is a valuable preventive maintenance and quality assurance tool. Switchable between °F and °C. Minimum/Maximum stored in memory. Specifications: Temperature Range () 14 to 122°F (-10 to 50°C), Accuracy: ±2° F / ± 1° C, Humidity Range: 20 to 95 %.