Both units can be connected to a Local Area Network through either a standard 10/100Base-T Ethernet or through an 802.11b wireless LAN connection. A software tool is used with a LAN to make settings for and carry out the automatic downloading of recorded data from TR-71W/72W loggers. The TR-71W is a temperature data logger with a range of -40° to 110°C with optional sensors available with a range from -60° to 155°C. The TR-72W is a temperature and humidity data logger with a range of 0° to 50°C and 10% to 95% RH.TandD Corp.www.tandd.com518.669.9227