Smart WiFi Weather Meter Professional Color Screen Digital Clock Weather Gauge with Outdoor Sensor for Temperature Humidity Wind Speed Direction Item Type: Smart WiFi Weather Meter Material: ABS Weight: Approx. 1549g/54.6oz Transmitter Size: Approx. 30x9x38cm / 11.8x3.5x15.0in Host Size: Approx. 8.5x4.5x14.9cm / 3.3x1.8x5.9in Indoor Temperature Detection Display: -20℃(-4°F) to 50℃(122°F) Outdoor Temperature Detection Display: -40℃ to 70℃ Indoor and Outdoor Humidity Detection Display: 20% to 95% Maximum Display Range: 600 to 1100 HPA (17.72 to 32.48 Inches Hg or 450 to 825.1 mm Hg) Rainfall Measurement Range: 0 to 9999 mm (0 to 393.6 Inches) Wind Speed Measurement Range: 0 to 180 Km/H (0 to 111 Mph) Wind Direction Measurement Range: 0 to 359 Degrees Light Strength and UV Index: Light Strength Measurement Display Range: 0 to 128klux (0 to 1378kfc) UV Index Measurement Display Range: 0 to 15 Levels TVOC Concentration Measurement Range: 0 to 9.999 mg/m³ Transmission Frequency:433.92 MHz RF Transmission Frequency Transmission Range:100 Meters (300 Feet) Transmission Range in an Open Area Weather Meter Power Supply: 2 AA Batteries (Not Included) Wireless Outdoor Sensor: 3 AA Batteries (Not Included)