The HATXOS, single point outside air temperature sensor utilizes a high accuracy platinum RTD sensor and a transmitter that provides a high accuracy signal with excellent long term stability, low hysteresis and fast response is available with various ranges. All probes are constructed to provide excellent heat transfer, fast response and are potted to resist moisture penetration. A sun and windshield is integrated into the enclosure. The HATXOS series is provided in a hinged lid, weatherproof ABS enclosure.