Honeywell Sensing & Control offers a variety of Packaged Temperature Probes. The 500 Series is a broad portfolio of air/gas, liquid, and surface temperature probes that use Honeywell's NTC (Negative Temperature Coefficient) enhanced sensitivity thermistors. Small and easy to install, the probe assemblies support and position the thermistor elements and protect them from damage. With an operating temperature range of -60C to 300C, the 500 Series Packaged Temperature Probes are ideal for industrial, transportation, aviation, and weather stations. In addition, Honeywell offers the ES110 and ES120 Series Packaged Temperature Probes with integral connectors. The modular probes are inflow thermistor-based sensors designed for use in the transportation industry. The ES110 air/gas sensor has an exposed thermistor element for greater levels of control, while the ES120 is used primarily for immersion temperature measurements.