Handheld Luminous Flux Meter Light Tester Accurate and Instant Response Range 7000  Lumens RS232 TES-133     Features& 65306;  Product Features 4-digit LCD reading. Spectral Sensitivity close to CIE photopic Curve. Auto ranging from 0.05 to 7000 lumens. Accurate and Instant response. Data Hold function. Data memory and read function. Zero function. Ratio function. Sort function. Comparator function. Best for measuring : LEDs, Small lamps, Fiber illuminators. Auto power off function. RS232 Interface. Easy to use. Adapters kit : 2/3/4/5/8/10m                             Display        4 digit LCD read out                    Measuring Range        9.999, 99.99, 999.9, 7000 lumens, Auto ranging (4 step)                    Overrange Display        OL is displayed                    Resolution        0.001 lumens                    Accuracy        0.05 to 0.1 7%, 0.1 to 1000 1%, 1000 to 7000 %                    Integrating Sphere        Diameter        50mm                    Sample pore        12.7mm diameter                    CIE photopic f 1        6%                    Temperature Characteristics        0.1%                    Measuring Rate        Approximately 5 time/sec                    Photosensor        Silicon photodiodes                    Data Memory Capacity        999 sets. (Direct reading from LCD display)                    Data Logger Capacity        40000 sets                    Operating/Storage Conditions        0 ~ 50<80% RH , -10~ 60<70%RH                    Power Source        6 pcs AAA size Battery                    Battery Life (typical)        100 hours                    Integrating sphere Lead Length        150 cm (approx.