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. 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 can be read at a glance. Meets Federal Government CLIA requirement 493.1252. Pocket pen has fast-response, solid-state sensors which respond in less than 6 seconds. 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 20 to 95%. Resolution is 1% and accuracy is ±3.5% RH midrange to ±5.5% RH elsewhere. To assure accuracy an individually serial- numbered Traceable® Certificate is provided from the manufacturer’s ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Supplied with an AAA battery for continuous, always-on monitoring for half a year. Case is high-impact, chemical-resistant ABS plastic. Size is 5-1/2 x 7/8 x 2/3 inches. Weight is 1-1/4 ounces. Replacement battery Cat. No. CON1105.