Designed specifically for lighting designers, the Sekonic SPECTROMETER C-4000 is a valuable tool for creativity and advanced lighting solutions.

Combining the renowned precision light measurement performance of Sekonic systems with the flexibility and convenience of smartphone technology, the C-4000 represents the next evolutionary step in the Sekonic spectrometer range.

The C-4000 offers a compact, lightweight, sophisticated and affordable solution for lighting professionals, but is also a powerful tool for technicians and installers in the field.

With its color touchscreen, wireless communication via Bluetooth and compatibility with Apple and Android smartphone and tablet devices, the C-4000 offers the greatest flexibility for data exchange in the field and raises the bar in the handheld spectrometer market...

In its basic function, the C-4000 is a stand-alone handheld spectrometer with numerical display.

In combination with the free Sekonic LD app on a smartphone or tablet, it also offers the possibility to remotely control measurements and use other practical functions.

In conjunction with the paid version of the SEKONIC LD app, extensive functions such as plot measurements are also available to impress even the most demanding lighting designer.

• Determination of numerical measured variables
  • lux... Illuminance (lx)
  • Tcp... Color temperature (K)
  • ⊿uv... Color deviation
  • Ra... Average color rendering index (CRI)
  • Rf... Color fidelity (TM-30)
  • Rg... Color vividness (TM-30)
  • x,y... CIE1931 chromaticity coordinate (x,y)
• Storage of up to 90 measurement data
• Single or continuous measurement modes:
  • Single measurement: single measurement recording
  • Continuous: continuous determination of measured values

• Wireless measurement via Bluetooth: Operate the C-4000 from your smart device
• Numerical values and graphs are displayed immediately on the screen of your device
• Measured values are saved on your smart device
• Import saved data from the C-4000 to your device
  Save up to 999 memory data on your smart device

• Add notes or image references to the measurement data in real time
• Import your drawings or photos as an illumination layout and plot the measured value directly in the layout
• Link GPS coordinates to retrieve the measurement location
• Create PDF or CSV reports within the app
• Share data from the app via your smart device