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RS PRO Infrared Thermometer, ±1.8 °F, ±1 °C, Centigrade, Fahrenheit With RS Calibration

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RS PRO RS-8863B Infrared Thermometer with Dual Laser Point

Introducing the RS PRO RS-8863B infrared (IR) thermometer. This RS PRO infrared temperature detector is a handheld device that can detect the environmental temperature by using a non-contact method of measurement. This instrument also measures surface temperature using an infrared sensor and includes dual laser pointers for better and more accurate targeting. This non-invasive and non-contact method of temperature measurement removes the issue of having to rely on using a physical contact on the item to get a reading from it, making it ideal for use in industrial environments like steelworks, oil and chemical production, environmental testing, gas production industries and much more. This dual laser temperature detector provides fast sampling with high accuracy, making it an incredibly useful and versatile tool across a range of applications.

Features and Benefits:

  • The RS PRO infrared temperature detector has an ergonomic grip for ultimate user comfort and to allow continuous use over extended periods of time

  • The built-in dual-laser targeting allows for better and more accurate targeting to ensure optimum measurement accuracy and precise non-contact temperature readings

  • This infrared thermometer has a temperature range of -50°C to +800°C with an accuracy of ±1 % of the reading at 20°C to 300°C (includes a user-selectable option for reading in Celsius or Fahrenheit)

  • The relative humidity range for this device is 0-90%RH and also features a digitally adjustable emissivity feature from 0.10 to 1.0

  • The LCD display with a backlight feature allows for easy to see results on the screen but also allows the instrument to be used in low-light environments

  • This IR unit has a distance to spot ratio of 20:1 and offers a high and low alarm setting that can trigger when readings are being taken

  • The selectable C° / F° display and automatic data hold feature allows for greater versatility across a range of applications

  • This IR thermometer features an auto power-off function to save the battery usage

  • The unit is powered by 9 V battery (supplied) and comes with a convenient carry case for safe storage of the IR unit


Infrared thermometers are instruments that measure the surface temperature of an object. They generally use a laser to point at the surface for the reading to be taken, whilst others include a temperature probe that measures the inside temperature of an object. Infrared thermometers are an essential device for individuals who need to measure the temperatures of something without physically touching the item. They can be found in the following areas:

  • HVAC

  • Industrial processes

  • Environmental testing

  • Scientific and Educational

How accurate are infrared thermometers?

Most IR laser thermometers have a measurement error specification, which shows their best accuracy. The surface being measured can also affect accuracy. Reflective objects result in lower measurements than the actual temperature, whilst non-reflective surfaces give a higher measurement. The emissivity of a surface is how effective it is at emitting energy as thermal radiation, as such some IR thermometers have adjustable emissivity settings.

Distance to spot ratio is also essential in providing accurate temperature measurements, if an infrared thermometer is too close to its target area, heat can build up in the device. This can give false readings or damage the temperature sensors

therefore, it is essential to always follow the manufacturers’ guidelines.

Is this unit calibrated?

Yes, the unit is RS calibrated


RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards
they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

Temperature ScaleCentigrade, Fahrenheit
Best Accuracy±1.8 °F, ±1 °C
Distance to Spot Ratio20:1
Emissivity0.10 - 1.0
Resolution0.1 (Upto 1000) °, 1 (Over 1000) °
Data StorageNo
Response Time<150 ms
Dimensions104 x 43 x 146mm