CSS-45 Remote Spectral Detector

For photopic and scotopic illuminance, S/P Ratio, EVE factor, luminous color, color rendering index and light spectrum and flicker

MSC15 Low Cost Spectral Light Meter from Gigahertz-Optic
Measures 28 different spectral light, color and effective radiometric/photometric measurands

Gigahertz-Optik GmbH's CSS-45 packs the full power and capability of a spectroradiometer into a compact splash proof metal housing only 1.75" dia x 2" high in size.

Expanded Visible Spectral Range per CIE S023
The CSS-45 covers the entire visible spectral range between 360 nm and 830 nm (visible spectral range according to CIE S023).

Accurate Measurements over a Wide Dynamic Range
An optical bandwidth correction function based on CIE 214 further improves the quality of the measured values. 
Manual and auto gain settings enable a wide measurement range from 1 lx to 350,000 lx for illuminance and color measurements.

Automatic dark current suppression is accomplished by means of a built-in electronic shutter. 

Accurate illuminance measurements require a precise, cosine-corrected entrance optic. The CSS-45 has an excellent cosine response (f2≤ 1.5 %).

Single or Multi-Detector Use
Both USB 2.0 and RS485 interfaces are standard to permit fast communications with the device at longer distances for remote applications plus single and multi-detector networks. The USB interface handles the power requirements.

User & SDK Software Supplied
The spectral detector head attaches to a PC via a one meter long USB cable. All measurement, data readout and collection are controlled by the supplied S-CSS-45 software. Plus the S-SDK-CSS-45 software development kit is included for self-programmers.

Every CSS-45 comes calibrated and certified by Gigahertz-Optik's calibration laboratory that is accredited by DAkkS (D-K-15047-01-00) for spectral responsivity and spectral irradiance calibrations according to ISO/IEC 17025.


  • CSS-45-Meter that connects to the CSS-45 for direct readout
  • Protective dome over the top of the detector for weatherproofing

Additional CSS-45 Specialist Functions:

  • Horticultural lighting - PAR measurement Photosynthetic Photon Flux Density (PPFD) in μmol/m²s
  • Human Centric Lighting - melanopic irradiance and illuminance, melanopic daylight equivalent illuminance
  • Phototherapy - total irradiance for bilirubin, Ebi, in mW/cm2 (IEC 60601-2-50) as well as average spectral irradiance in μW/cm2/nm (American Academy of Pediatrics)

Product Specifications
For product specifications and configurable options for the CSS-45 Remote Spectral Detector, please visit the Gigahertz-Optik main website here.

To Order The CSS-45 Remote Spectral Detector, Call Us Today At 1-978-462-1818.
Practical Solutions To Real Application Problems

Here's The Problem:
You are tasked with life-testing a rack of lighting fixtures for degradation effects in terms of light intensity, color and spectral variations.

Since the fixtures are located across a large room any measurement device(s) must be compact for easy mounting one per fixture. They must be capable of accurately measuring illuminance or intensity, color temperature and spectra over extended time periods. And all the devices must be linked for central data acquisition and reporting.

Here Are The Requirements:

  • Low profile, easily mountable small footprint spectroradiometer
  • Multi-detector ganging with control at one central location
  • Low cost so that several fixtures can be monitored simultaneously
  • Reliable and accurate measurements of intensity, color and spectra

Here's The Solution:
Gigahertz-Optik's CSS-45 Remote Spectroradiometer Detector for accurate light & color measurements with RS-485 control allowing multi-detector networking across long distances.

Interested in discussing your LED measurement application? Give us a call!

More Gigahertz-Optik light measurement instrumentation can be found on www.light-measurement.com.