天氣警告信號圖卡Magnetic Weather Signals Card 20pcs

A temperature and humidity meter with a Colour LCD display which simultaneously displays temperature and humidity. The sensors are located in a protective grille which gives a fast response time and makes the instrument ideally suited for taking measurements in an air stream. Features: 1. Large LCD dual display 2. Humidity & temperature measuring 3. Humidity & temperature Max / Min 4. Data hold 5. Data Record 6. Low battery indication 7. No operation 15 minutes auto power off 8. Supplied with Batteries 9.Dew Point 10.Wet Bulb Temperture