Device offers minimum/maximum memory and hold features. Unit measures 7 1/8 x 2 ¾ x 1 ¼”. Probe is 8 ½ long with 2/3” diameter with a 3 foot cable. Weight is 10 ¾ ounces. With accuracy of +/- 2% RH. Dew point display (range 0 to 50 degrees C with a resolution of 0.1 and an accuracy of +/- 2% C) and with a programmable alarm element. To assure accuracy, an individual serial numbered Traceable Certificate from an ISO 17025 calibration laboratory accredited by A2LA. Certificate indicates traceable to standards provided by NIST.