à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ ¤ÇÒÁª×é¹ WB200 Wet Bulb Hygro-Thermometer Datalogger Features : Measures Wet Bulb, Dew Point, Temperature (41°F to 122°F /5°C to 50°C) and Relative Humidity (0.0 to 99.9%RH) Resolution: 0.1°F/°C and 0.1%RH Basic accuracy: ±1°F/±0.6°C; ±3%RH Audible and visual alarm alerts when temperature and humidity level is higher or lower than the user programmed High/Low set points Two thermistors provide fast and accurate readings Dual color LED indicator for datalogging (Green) and alarm (Red) modes Datalogger stores100 records that can easily be recalled on meter display User programmable datalogging sampling rate from 15 to 60 minutes in 5 minute increments Water and Dust resistant construction, Low battery indicator Complete with four AAA batteries and 100-240V Universal AC adaptor Specifications Temperature readings 41°F to 122°F /5°C to 50°C Relative Humidity 0.0 to 99.9% RH Resolution 0.1°F/°C and 0.1% RH Basic accuracy ±1°F/±0.6°C; ±3% RH Display update rate 120 seconds Dimensions 2.8 x 3.1 x 7.0” (71 x 78 x 177 mm) Extech Humidity Hygrometer Temperature Thermometer WB200 à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ-¤ÇÒÁª×é¹