Designed to provide critical tire surface temperature readings Dimmable black light Warning light set to spec Volt meter 10? angle sensor Maximum recall Features 10? field of view measuring temperatures up to 302?F (150?C) Sensor temperature range up to 302?F (150?C) Meter operating temperature -14-140?F (-10-60 ?C) Effective voltage DC 12V. GAUGE INFARED TIRE TEMP