Forecast w/ Tendency IN Temp & Humidity OUT Temp Moon Phase Dimensions: Receiver: 7" x 4.5" x 1" Sensor: 5.5" x 1.625" x 1" All Features: Barometric Pressure Tendency Arrow 3 Forecast Icons Based on Changing Barometric Pressure Indoor Humidity (%RH) Records MIN & MAX Humidity with Time and Date Stamp Wireless Outdoor and Indoor Temperature (°F or °C) Records MIN & MAX Temperature with Time and Date Stamp 8 Moon Phase Icons with Tide Indicator Atomic Time and Date with Manual Setting Automatically Updates for Daylight Saving Time (On/Off Option) 12 or 24 Hour Time Display Perpetual Calendar Time Zone Setting Time Alarm Can Receive Up to 3 Sensors Wall Hanging or Free Standing Specifications: Indoor Humidity Range: 1% to 99% Wireless Outdoor Temperature Range: -21.9°F to 157.8°F Indoor Temperature Range: 14.1°F to 139.8°F Transmission Range: Up to 330 Feet Transmission Frequency: 433.92 MHz Power Requirements: Receiver: 3 "AA" Alkaline Batteries Sensor: 2 "AA" Alkaline Batteries