All Features:
Includes Base Unit & 1 Remote Sensor. Indoor Temperature, Outdoor Temperature & Humidity, Wireless Outdoor Humidity, MIN/MAX Temperature & Humidity Memory, 12/24 Hour Digital Time Display, Wall Hanging or Free Standing, Sensor Reception Icon.

Specifications:
Outdoor Relative Humidity: 1% to 99%, Outdoor Relative Temperature Range: -39.8°F to 139.8°F, Indoor Temperature Range: 14.1°F to 139.8°F, Wireless Transmission Range: up to 330 Feet, Can Receive up to 3 Sensors.

Power Requirements:
Receiver: 2 “AA” Alkaline Batteries (not included)
Sensor: 2 “AA” Alkaline Batteries (not included)
Battery Life: up to 24 Months

Dimensions:
Receiver: 2.76" x 1.14" x 4.54"
Sensor: 5.34 " x 2.26 " x 2.44"