Thermostat Internet Gateway; Type Internet Gateway; Used On RedLINK Enabled Thermostat; Overall Dimension 3.578 Inch Width x 1.125 Inch Depth x 3.904 Inch Height; Color White; Voltage Rating 20 to 30 Volt AC; Electrical Connection 24 Volt Plug-In Transformer; Operating Temperature Rating -40 to 165 Deg F; Operating Humidity 5 to 90 Percent RH (Non-Condensing); Frequency Rating 902 to 928 Mega Hertz; Includes 3 Foot Ethernet Cable and 5 Volt DC 1000 Milliamp Plug-In Power Adapter; Application Internet Control of RedLINK Thermostat, Up to 4-Heat/2-Cool Heat Pump