The LightScout Quantum (PAR)/DLI Meter provides scientifically accurate PAR light readings under any light source, including LED. Set out for 24 hours to compute and display DLI. Three modes of operation: Instant Spot Measurement for PAR light readings, Scan Mode for quickly averaging PAR over an area, and DLI Mode shows Daily Light Integral on the LCD. Includes integral mounting plate for stand, stake, lanyard and hanger hole and magnet mounts. 1/4"-20 threaded hole for mounting on camera tripods and stands. Includes sensor cover and soft carrying case.