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Red handheld infrared thermometer with laser sight and USB interface

CEM

CEM DT-8855 Infrared Thermometer 30:1 USB 433MHz

SKU CH-RENH-4YJNC MPN DT-8855

Measures temperature from a distance with a 30:1 spot ratio, adjustable emissivity, built-in laser, K-type probe input, data logging and 433 MHz wireless USB output

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Measures small targets from a distance with 30:1 spot ratio
  • Transfers readings wirelessly via 433 MHz USB link
  • Covers extreme heat and cold from -50 °C upwards
  • Sets emissivity precisely between 0.10 and 1.0
  • Logs max, min, average and differential values automatically

Professional Infrared Thermometer 30:1 D:S

The CEM DT-8855 is a non-contact infrared thermometer built for high-temperature measurement at distance. Its 30:1 distance-to-spot ratio lets technicians capture accurate readings from small targets without approaching hazards. A built-in laser sight and adjustable emissivity from 0.10 to 1.0 support reliable data across varied surfaces. Wireless USB connectivity at 433 MHz enables cable-free data transfer to a host system.

Suited for Maintenance and Process Monitoring

This instrument fits electricians, HVAC technicians and plant engineers who need fast spot checks and logged histories. The K-type probe input extends coverage to contact measurement when required. Automatic recording of maximum, minimum, difference and average values plus high/low alarms streamline preventive-maintenance rounds. Users who must operate where radio transmission is restricted or who require certified calibration out of the box should evaluate alternatives.

Deciding Specification 30:1 Optical Resolution

The 30:1 distance-to-spot ratio is the single figure that determines whether this model matches the application. It defines the minimum target size measurable at a given working distance. If the task demands a tighter spot at the same range, a higher D:S instrument is necessary. If the working distance is shorter or targets are larger, a lower ratio unit may suffice.

How it compares

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

Price $273.99
Pricier than about 85% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameCEM
Model nameDT-8855
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

How does the 30:1 distance-to-spot ratio limit accuracy when measuring small targets at long range?

The 30:1 ratio means the measured spot diameter equals the distance divided by 30; at 30 metres the spot is roughly one metre wide, so smaller objects will average in background temperature and reduce precision.

What heat or power issues appear during continuous all-day use of the DT-8855?

The instrument draws power from user-supplied batteries and has no internal fan; extended use only drains the cells faster and the housing remains at ambient temperature because the sensor is non-contact.

Which batteries must I already own before the DT-8855 will operate?

The package excludes batteries due to air-shipping rules; you need to purchase compatible cells locally before first use.

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