Technical specifications
CEM DT-1309 Light Meters

Max Range: 400,000lux/Fc

Accuracy: ±5%±10d(<10,000Lux) and ±10%±10d(>10,000Lux)

Max Resolution: 0.1lux/Fc

Measuring rate: 1.5 times/second

Photo Detector: 115mm x 60mm x 27mm