La Crosse Technology TX22U-IT 915 Mhz Wireless Thermo Temperature & Hydro Sensor

From the Manufacturer
The La Crosse Technology TX22U-IT 915MHz Wireless Temperature and Humidity Sensor is used in conjunction with La Crosse Technology wireless weather stations that use the 915 MHz technology.
Product Description
Features IN or OUT Temp Sensor IN or OUT Humidity Weather Resistant Dimensions: Sensor: 5.34 ” x 2.26 ” x 2.44 “
Source: La Crosse Technology TX22U-IT 915 Mhz Wireless Thermo Temperature & Hydro Sensor