à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ áʧ ÍسËÀÙÁÔ ¤ÇÒÁª×é¹ 4 in1 Humidity, Temperature Light and Anemometer HYBRID POWERED ENVIRONMENTAL QUALITY METER 850068 HYBRID POWERED ENVIRONMENTAL QUALITY METER 850068 à¤Ã×èͧÇÑ´ ¤ÇÒÁàÃçÇÅÁ áʧ ÍسËÀÙÁÔ ¤ÇÒÁª×é¹ Air speed Humidity Light Temperature A unique hand powered generator enables environmental quality measurements with or without batteries. Combines an anemometer, hygrometer, thermometer, and light meter in a single rugged unit. Also reads any type-K thermocouple probe. The large dual LCD displays results and indicates low battery and out of range. Features touch-tone buttons, min/max, auto power off and hold functions. Comes ready to use in a foam lined hard shell carrying case with instructions, 9V battery, tripod back and a tripod screw. Weight: 15oz (415g). Dim: 7” x 2 2/3” x 1 ½” (175 x 75 x 45mm). Specifications Range Resolution Accuracy ºC ambient 0 ~ 50 0.1 ±1.2ºC ºF ambient 32 ~ 122 ±2.5ºF ºC Type K -100 ~ 1300 ±(1% + 1ºC) ºF Type K -148 ~ 2372 ±(1% + 2ºF) RH 10 ~ 95% >70%RH ±(4% rdg + 1.2%RH) Airspeed m/s 0.4 ~ 25.0 >20 m/s ±4% fs Airspeed km/h 1.4 ~ 90.0 Airspeed mile/h 0.9 ~ 55.9 Airspeed knots 0.8 ~ 48.6 Airspeed ft/min 80 ~ 4930 1 Lux 0 ~ 2,000 1800 ~ 20,000 1 10 ±5% rdg + 8d Foot Candle 0 ~ 204.0 170 ~ 1860 0.1 1 850068 Anemometer Humidity Light meter Lux meter SPER Scientific Temperature ÇÑ´ËÅÒ¤èÒã¹à¤Ã×èͧà´ÕÂÇ à¤Ã×èͧÇÑ´¤ÇÒÁà¢éÁáʧ à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ ¤ÇÒÁª×é¹ à¤Ã×èͧÇÑ´áʧ Ẻ¾¡¾Ò