Humidity/Temperature Pen with memory makes it easy to monitor any location. Pen continuously and simultaneously displays both RH and °F/°C with dual-recall memories. 30-Second response time. Handy pocket clip makes it easy to carry. Memory displays highest and lowest humidity/temperature readings achieved overnight or during any time period. Three-quarter-inch-high LCD display can be read at a glance. Meets CLIA requirement 493.1207. Pocket pen has fast-response solid-state sensors. Sensors respond in less than 30 seconds and display is updated every second. Temperature range is 32.0 to 122.0°F (0.0 to 50.0°C) with a resolution of 0.1° and an accuracy of ±1°C. Relative humidity display is 2 to 98% with the useable range of 25 to 98%, with a resolution of 1% and an accuracy of ±3.5% RH midrange to ±5.5% RH in the usable range. An individually serial-numbered Traceable® Certificate is supplied to indicate instrument traceability to standards provided by NIST (National Institute of Standards and Technology). Supplied with a 3V battery for continuous, "always on" monitoring for half a year. Case is high-impact, chemical-resistant ABS plastic. Size is 6-5/8 x 1-1/4 x 1/2 inches. Weight is 1-3/4 ounces.