• UVA probe captures long-wave 365nm UV irradiance measurements under a UVA (black light) source
  • UVC probe captures short-wave 254nm UV irradiance measurements under a UVC light source
  • Range:
    • UVA: 2mW/cm2, 20mW/cm2 with ±4% accuracy FS
    • UVC: 2mW/cm2, 20mW/cm2 with ±4% accuracy FS
  • Cosine correction filter and metal housing
  • Offset adjustment used for zero function or to make relative measurements
  • Adjustable data sampling rate: 1 to 3600 seconds
  • Memory stores 99 readings manually
  • Datalogging feature records readings with date and time stamp on an SD card (included) in Excel® format
  • Type K/J Thermocouple input for temperature measurements (probes sold separately)
  • Large backlit LCD display
  • Record/Recall MIN, MAX readings
  • Data Hold plus Auto power off with disable function

What's in the Box

  • Built-in tilt stand
  • SD memory card
  • UVA light sensor with protective cover
  • UVC light sensor
  • Hard case
  • Universal AC adaptor
  • 6 AA batteries


The Extech SDL470 light meter is a compact instrument with probes to measure both UVA and UVC and data logging results. UVA is the long waves (365nm) of ultraviolet light while UVC is the short waves (254nm) of ultraviolet light. The SDL470 light meter is ideal for any application seeking to measure these wavelengths.

The Extech SDL470 light meter measures both UVA and UVC over ranges of 2mW/cm2 and 20mW/cm2. The internal data logger date/time stamps and stores files onto an SD card in MS Excel® format to make transferring, storing, and analyzing the data on your PC easier. Readings are shown on a large backlit LCD display. The meter also includes Min/Max and Data Hold functions and auto power off (with disable) to save battery life.

In Stock

Manufacturer Stock

This stock is typically available to ship in 3 - 5 working days.

Part Number Price Available
$969.00 9 in stock

Interested in Other Part Numbers?

Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 1-2 weeks". Click here to select options