Honeywell THM6000R7001/U RedLINK Internet Gateway, For Use With: RedLINK™ Enabled Thermostats and Accessories, Specifications: 24 volt Plug-In Transformer, 902 – 928 MHz Frequency, 5 – 90% RH Non-Condensing Operating Humidity, -40 to 165 deg F Operating Temperature, White, 3.578 Inch Width x 1-1/8 Inch Depth x 3.904 Inch Height, Includes: 3 ft Ethernet Cable and 5 VDC, 1000 milli-amp Plug-In Power Adapter