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  • Wide temperature range
  • Low cost
  • Max temperature display
  • Tripod-mountable
  • 12:1 distance to spot ratio

The Raytek Raynger ST20 Pro infrared thermometer is the professional's choice for value and precision. This non-contact Raytek Raynger ST20 infrared thermometer offers accurate readings in a compact and reliable design.

The Raytek Raynger ST20 infrared thermometer has a user-selectable temperature range of -25 to 999°F (-32 to 535°C), a 500 msec reading response time, and a weight of 11 ounces. It is safe to use as it requires no contact with the surface measured so long as it is within the thermometer's range (D:S=12:1). The Raytek Raynger ST20 infrared thermometer has a preset emissivity of 0.95.

With extra-bright single-point laser sighting, a MAX temperature display, and rugged rubber overmolding, the Raytek Raynger ST20 infrared thermometer can prevent downtime by permitting preventative and predictive maintenance by simply pointing, shooting, and reading temperature measurements.

There are numerous applications and industries in which the Raytek Raynger ST20 infrared thermometer can be utilized.

Applications for the Raytek Raynger ST20 Infrared Thermometer

  • Automotive & diesel
  • Facility maintenance
  • Fire safety
  • Marine maintenance
  • Electrical
  • Industrial
  • Asphalt work
  • HVAC systems

Optional nylon holster sold separately.

Infrared Temperature Measurement - Technology Explained:

Infrared thermometers measure temperature from a distance by detecting the amount of thermal electromagnetic radiation emitted from the object being measured. This allows users to accurately measure surface temperatures in hazardous or hard-to-reach places, or other situations in which non-contact temperature measurement is desirable. Infrared thermometer technology is useful in a wide range of applications – including industrial, laboratory, food service, fire fighting, hobby, and home use.

While the technology is relatively simple, the myriad of names given to these devices can be confusing. "Laser Thermometers" makes reference to the laser that helps aim the thermometer. "IR Sensors" and "IR Thermometers" make use of a common abbreviation for "infrared". "Non-Contact Thermometers" is descriptive of the device's ability to measure temperature from a distance. "Radiation Pyrometers" is a scientific/technical term for these devices.

National Stock Numbers (NSN)

The following National Stock Numbers reference the Raytek Raynger ST20 Infrared Thermometer:

NSN NSN Item Name Reference/Part Number
Raytek ST series Nylon holster-style case
Nylon holster style case for Raynger ST series
In Stock
Extended 2 year warranty
Extended 2 year warranty on Raytek ST20 and ST25 units
IR Thermometer Calibration
NIST-traceable calibration and certificate for infrared thermometers