A digital thermometer with a large 2" high display that is visible from a distance. It includes two digits made up of 25 LEDs each plus a degree Celsius symbol. It is based on two Integrated Circuits: the 7107 voltmeter and the LM35Z temperature sensor. The circuit incorporates a built-in power supply with an AC/DC adapter jack. Supply voltage: 9V DC @ 200mA. Recommended adapter: RP-9200-P.