A data collection device and a temperature monitor unit monitors the temperature of a remote structure. The temperature monitor unit has a thermocouple, a communications device assembly having an antenna and a transmitter, a power supply for powering the controller and the communications device, and an enclosure for surrounding the communications device and the power supply with the thermocouple and the antenna extending therethrough. The communications device obtains a temperature from the thermocouple and activates the transmitter to send the temperature to the data collection device through the antenna.