Infrared Thermometer ST631

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500.00 Grams
Minimum Purchase:
1 unit
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  • ST631 Infrared Thermometer (ST631 )
  • ST631 Infrared Thermometer (ST631 )


ST631 from Sentry is a non-contact infrared thermometer. ST631 is a forehead non-contact infrared measuring instrument for human temperature evaluation and also easy use for household appliances.

ST631 from Sentry comes with the following properties:

  • Dual temperature measurement including forehead and normal temperature.
  • Non-contact and Hygienic without changing cap or touching different human bodies, preventing infection.
  • Simply press the trigger and read the temperature on a large digital display.
  • Special design for detecting the deviating from normal temperature measurement on the human body.
  • Easy and simple to operate, quick response.

Product Specifications



  • Forehead

35~42oC  95~107.6oF)

  • Household

0~100oC (32~212oF)

  • Accuracy

Forehead : ±0.3oC (±0.5oF)
Household : ±1oC (±1.8oF)

  • Resolution

0.1oC (0.1oF)

  • Response Time

1 sec.(Forehead) / 0.5 sec.(Household)

  • Distance

2~5cm (0.79"~1.97")

  • Thermopile

5~14 µm

  • Repeatability

+-1°C ( +-2°F)

  • Auto Power-off

Automatically after approx. 20sec

  • Storage Temp.

-10~60°C (14~140°F)

  • °C / °F Switchable


  • Backlight


  • Battery Type

9V(006P, IEC6F22, NEDA1604)

  • Dimensions

156x100x32 mm(6.14"x3.94"x1.26")

  • Weight

125g (4.41 oz.)


Brand Information

Sentry Optronics Corp. where the motto is Excellence, Innovation, and Satisfaction. As being an outstanding designer & manufacturer for Infrared Technology, they are committed to exceeding their customer’s requirements and providing the highest grade of technical support. They are always on the cutting edge of technology and integrate the engineering, quality, manufacturing, and sales closely to become an impeccable developing team. They have earned a long-standing relationship with their clientele. They believe in providing their customer base with total satisfaction.
They are situated in China with two manufacturing plants, one in Shanghai and one in Beijing.

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Warranty Information

One Year Warranty
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