All Features:

* Monitors Indoor Temperature (°F or °C)
* Wireless Outdoor Temperature (°F or °C)
* Wireless Outdoor Humidity
* MIN/MAX Temperature & Humidity Records
* 12/24 Hour Digital Time Display
* Wall Hanging or Free Standing
* Sensor Reception Icon

IT-915MHz

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