The Testo 925 Type K thermocouple thermometer uses both corded and optional wireless probes, displaying both temperatuers simultaneously. A user-adjustable and audible alarm sounds if set limits are exceeded, making this a reliable QC instrument. Measurements as well as Max-Min values with time/date can be printed on-site with the optional Testo printer.-1 channel measuring instrument with optional radio probe-Hold button to freeze reading-Continuous display of max/min values-An audible alarm sounds when limit values are exceeded