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Red handheld chroma light meter with magnetic mount

Sentry

Sentry ST520 Chroma Light Meter electrician tool

SKU CH-VZ3C-3D74M MPN ST520

Measures light luminance, colour coordinates and temperature with CIE photopic response and magnetic mount

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Precision luminance and color coordinate measurement
  • Meets CIE photopic spectral response standard
  • Displays color temperature and correlated color temperature
  • Custom reference for color difference analysis
  • Magnetic mount enables hands-free operation

Professional Light Measurement

The Sentry ST520 is a precision chroma meter designed for electricians and lighting professionals who need accurate luminance and colour temperature readings. It measures broad light sources and conforms to CIE photopic spectral response standards for reliable data.

Sustained Accuracy Features

The instrument maintains consistent performance during extended measurement sessions with selectable lux or foot-candle units. A magnetic mount secures the device for stable, hands-free readings while the custom reference value function supports colour difference analysis over time.

Setup Requirements

Verify that your measurement targets are broad light sources rather than LED-specific or multi-source environments, as the ST520 is optimised for the former. Confirm the red colour finish suits your workplace identification needs and that the single-unit pack quantity matches your toolkit requirements.

How it compares

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

Price $324.99
Pricier than about 89% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSentry
Model nameST520
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

How does the ST520 handle heat and power draw during all-day use?

The meter runs on batteries with no active cooling, so it produces no audible noise and negligible heat during continuous operation.

What must I already own to start measuring with the ST520?

Standard batteries for the meter and a ferrous surface if you plan to use the magnetic mount are all that is required.

Can the ST520 work alongside my older lux meter for cross-checking readings?

Yes — both instruments measure luminance in lux or foot-candles, so you can compare results directly on the same light source.

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