The Wahl DST500-FM Digital RTD thermometer is a wide-range, high-accuracy thermometer designed for hazardous locations where accurate and reliable temperature monitoring is critical. Fixed stem probes in straight or 90-degree back, left, or right angle connection from either 304 or 316 stainless steel are available, with userselectable Fahrenheit or Celsius display. The 4-wire RTD has a total system accuracy of ±0.3°F (±0.2°C) for temperatures less than 300°F (148.8°C) and ± 0.25 percent of reading for temperatures greater than 300°F (148.8°C) over a one-year period. Temperature range is -328° to 1,472°F (minus 200°-800°C). The 1-inch, four-digit LCD display is readable from 30 feet, with resolution of 0.1°F/°C (1°F above 999.9°). The rugged stainless steel and polycarbonate housing is rated NEMA 4X. The Wahl DST500-FM is factory configurable to your specification. System is tamper-resistant, with all adjustments requiring the optional DSTCAL software kit for programming and calibration. Use DSTCAL to adjust sample rate from 0.25 to 10 seconds in 0.25-second intervals. DST500-FM Models are made in the U.S. and include a two-year warranty; NIST traceability is available. Standard DST500 models are also available.