เครื่องวัด บันทึกอุณหภูมิ ความชื้น Temperature Humidity Datalogger HE173 HE173/HE174 Temperature and Humidity Data Logger Features: LCD display shows high/low and last readings Data save even when battery is spent Selectable °C or °F Mini USB interface 43,000 log readings Free configuration and graphing software Dimensions: 125mm * 28mm * 22mm Specifications Model HE173 HE174 Accuracy ±0.5°C (±0.9°F) ±0.3°C (±0.6°F) ±3%RH ±2%RH Memory 43,000 readings Measurement Range -30 to +85°C , 0 to 100%RH Resolution 0.1°C, 0.1%RH Battery 1/2 AA, 3.6V Lithium Battery Typical battery life 1 year IP Rating IP67 Logging rate 2s ~ 24h LCD display area 18mm * 13.5mm Accessories ToAnalyzer U CD, USB cable, User Manual, Battery.