Traceable® hygrometer/thermometer provide RH/temperature at a glance. Traceable® hygrometer/thermometer provides readings instantly. It is ideal for constantly monitoring labs, fume hoods, walk-ins, plant areas, and storage facilities. Large, easy-to-read 1/2in high LCD digits can be read from 15-foot To assure accuracy an individually serial-numbered Traceable® Certificate is provided from our ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Bench stand and wall mount, self-contained, stable, and accurate unit requires no adjustment or maintenance. Complete with screw for wall mounting and plastic stand for placing on the bench. Modern design is housed in a rugged ABS plastic case. Supplied with AA battery for 1-1/2 years of always-on operation. Replacement battery Cat. No. 1111. Features: Displays temperature/humidity. Size: 3-1/2 x 5 x 7/8in. Humidity Range: 25 to 95%RH. Temperature Range: 32 to 122°F; 0 to 50°C. Humidity Resolution: 1%RH. Temperature Resolution: 0.1°. Humidity Accuracy: ±2%RH mid-range otherwise ±4%RH. Temperature Accuracy: ±1°C (0 to 40°C) otherwise 2°C. Display: 1/2in high 2-line LCD. Weight: 6oz. Control Company#: 4088.