The digital thermometer is an intelligent temperature transmitter. Portable Electronic Thermometers (PET) are designed to measure temperature in an RTD heat generator with a thermometer or RTD probe. Digital thermometers are easy to carry with the help of durable sensors and a comfortable digital display. The performance of a digital thermometer depends on its type of sensor. The computer converts the resistance difference to a temperature difference and provides a digital reading in degrees. The most widely used thermometer in the home is the digital thermometer.