â·ÃÊͺ¶ÒÁÃÒ¤Ò The Extech 445582 Humidity & Temperature Pen Kit includes the compact, digital 445580 hygro-thermometer along with the RH300-CAL calibration standards and carrying case. 445582: Humidity/Temperature Pen Kit Compact, Digital Hygro-Thermometer with 33% and 75% RH calibration standards and case Features: Simultaneous display of Temperature (°C/°F) and Relative Humidity Max/Min and Data Hold Built-in self calibration utility allows for field calibrations using Relative Humidity calibration bottles Includes meter, 33% and 75% RH calibration standards, and hard vinyl carrying case Specifications: Sensor Type: Capacitance Humidity Range: 10 to 90% Temperature (Air): 14 to 122F (-10 to 50C) Basic Accuracy: +/-5%, +/-1.5 Maximum Resolution: 0.1%, 0.1 Dimensions: 5.7"x1.2"x1" (145x30x25mm) Weight: 2.3oz (65g) CE: Yes 445582 Extech Hygrometer Temperature Thermo-Hygrometer à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ ¤ÇÒÁª×é¹