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Red handheld IR thermometer with backlit LCD display and laser pointer

TENMARS ELECTRONICS

TENMARS ELECTRONICS TM-301 IR Thermometer electrician tool

SKU CH-Y1H6-TZ63A MPN TM-301

Measures -30°C to 530°C with 10:1 distance-to-spot ratio, laser targeting and backlit LCD for HVAC, electrical and motor inspections

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Backlit LCD for clear readings in dim areas
  • Laser targeting pinpoints the exact measurement spot
  • Wide -30 °C to 530 °C range covers HVAC, electrical and motor checks
  • 10:1 distance-to-spot ratio allows safe non-contact measurement
  • Auto power-off after 10 seconds extends 12-hour battery life

Infrared thermometer for inspection work

The Tenmars TM-301 is a non-contact infrared thermometer built for HVAC, electrical and motor inspection. It measures surface temperature from minus 30 °C to 530 °C with a 10:1 distance-to-spot ratio. A backlit LCD shows readings in °C or °F and includes max/min hold. Laser targeting aids aim and the unit weighs roughly 150 g without battery.

Suited for spot checks; not for precision lab use

Electricians and HVAC technicians can use it for quick breaker-panel scans, duct-temperature checks or motor-bearing monitoring. The fixed emissivity of 0.95 limits accuracy on reflective metals or polished surfaces. Users who need adjustable emissivity or tighter tolerance than ±2 °C should look at other instruments.

Fixed 0.95 emissivity and 10:1 optics

The thermometer operates at a preset emissivity of 0.95 and a 10:1 distance-to-spot ratio. These two figures decide whether the tool matches the surface material and target size of your application. Power comes from a 9 V 6F22 battery, not included, giving about 12 hours of continuous use.

How it compares

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

Price $91.99
Typical for this category: the median of 5,006 items is $95.99.

Specifications

Product
Brand nameTENMARS
Model nameTM-301
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

What comes in the box and what must I buy before first use?

The thermometer ships as a single unit in a box; a 9 V 006P or IEC 6F22 battery is not included and must be purchased separately.

How do I decide between the two temperature scales on this TM-301?

The display toggles between °C and °F, so you can read -30 °C to 530 °C or -22 °F to 986 °F without any extra accessory.

What does the 10:1 distance-to-spot ratio mean when I am measuring a motor?

At a 10 cm distance the measurement spot is roughly 1 cm wide, so you need to be close enough that the target completely fills that circle for an accurate reading.

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