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Red handheld infrared thermometer with 12:1 distance-to-spot ratio

Sentry

Sentry ST652 electrician tool DS ratio 12:1 range -32~535°C resolution 0.1°C

SKU CH-J37E-1Y8AF MPN ST652

Measures temperature without contact from -32 °C to 535 °C with 0.1 °C resolution and a 12:1 distance-to-spot ratio

  • Labor warranty1 Year
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Non-contact infrared measurement for safe distance checks
  • 12:1 distance-to-spot ratio for focused readings
  • Wide temperature range from -32 to 535 °C
  • 1 °C resolution for detailed detection
  • Rugged compact design suits general-purpose use

Non-contact infrared thermometer for electricians

The Sentry ST652 measures surface temperature without contact using a 12:1 distance-to-spot ratio. It covers a range from -32 °C to 535 °C with a 0.1 °C resolution. The rugged red housing is supplied as a single unit in a box.

Suited for quick scans on live panels

Electricians who need fast, non-contact checks on energised equipment will find the 12:1 optics practical for typical panel distances. Users who require a tighter spot size for small targets at long range or a wider temperature span should consider other instruments.

12:1 distance-to-spot ratio defines usable working

At a 12:1 ratio the measurement spot grows one unit for every twelve units of distance, so the operator must stay close enough for the spot to fit the target. This single optical specification determines whether the ST652 matches the intended inspection task.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $79.99
Cheaper than about 61% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSENTRY
Model nameST652
Color and finishRed
In the box
Number of items1 pack

Questions about this item

What distance-to-spot ratio does the ST652 use for accurate infrared readings?

The ST652 operates at a 12:1 distance-to-spot ratio, meaning the measurement area grows one unit wide for every twelve units of distance from the target surface.

Which step do users often miss when installing the ST652 for the first time?

Many users forget to allow the unit to thermally stabilise for several minutes after inserting the battery before taking critical measurements.

What replacement part will the ST652 need over its service life?

The ST652 will require fresh batteries as the primary consumable; the infrared sensor itself is solid-state and has no scheduled replacement interval.

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