Patent ID: 8388222

Claim:
A device adapted to monitor a space being heated for the purpose of eradicating a pest infestation, the device comprising: a sensor configured to sense the temperature proximate the sensor and to provide a signal that is indicative of the sensed temperature proximate the sensor; a visual indicator configured to provide a visible indication of status; and a microprocessor connected to the sensor, the microprocessor being configured to determine whether the sensed temperature exceeds a minimum lethal temperature and to responsively activate the visual indicator to provide a visible indication of minimum lethal temperature, wherein the microprocessor is further configured to determine whether completion has occurred of a minimum heating duration during which the sensed temperature exceeds the minimum lethal temperature, and to responsively activate the visual indicator to provide a visible indication that the minimum heating duration required for eradication of a pest infestation has elapsed; wherein the microprocessor is configured to determine completion of the minimum heating duration for eradication by determining from each sensed temperature received from the sensor a count value that is based on the sensed temperature value, and by determining when a sum of the count values has reached a predetermined minimum count required for eradication of the pest infestation.