A. Features: 1. Electronic devices use changes in electrical capacitance or resistance to measure humidity differences. 2. Large-character LCD display, clear to read. 3. Low power consumption and high stability & accuracy. 4. Display temperature, humidity and time simultaneously. 5. Temperature unit selectable, 12 hour / 24 hour displaying system selectable. 6. Memory of MAX & MIN measuring value. 7. Clock & Calendar function, desk-top placing or wall hanging. 8. Adopts ABS engineering plastics, good toughness and rigidity, safer and wear-resistant. 9. Display indoor temperature, outdoor temperature and indoor humidity. 10. Freezing point alarm at -1~4℃. 11. 8 minutes snooze function. B. Specification: SMART SENSOR Temperature Humidity Meter is an instrument used for measuring the moisture content in the atmosphere. Humidity measurement instruments usually rely on measurements of some other quantity such as temperature, pressure, mass or a mechanical or electrical change in a substance as moisture is absorbed. By calibration and calculation, these measured quantities can lead to a measurement of humidity. C. Specifications: - Material: ABS - Color: Yellow - Temperature measuring range (indoor): -10~+50℃ (14~+122℉) - Temperature measuring range (outdoor): -50~+70℃ (-58~+158℉) - Temperature measuring accuracy: ±2℃ - Temperature resolution: 0.1℃ (0.2℉) - Humidity measuring range: 20%RH-99%RH - Humidity measuring accuracy: ±5%RH - Humidity resolution: 1%RH - Freezing point alarm: -1~4℃ - Calendar: 1999/1/1-2048/12/31 - Battery: 1 X AAA 1.5V (not included) - Item size: 10.8*10*2.2cm/4.25*3.93*0.86in - Item weight: 126g - Package size: 21.5*14.5*4.5cm/8.46*5.70*1.77in - Package weight: 157g D. Note: Item color may show slight aberration due to different shooting light and monitor display. Battery is NOT included. E. Packing list: 1* Humidity Temperature Meter