Spectral sensitivity range200 ~ 525 nmOptical bandwidth2.8 nmMeasuring range of irradianceup to 40.000 (Variants on request) mW/cm²Data logger spectral measurement data500 records, 20 ms sampling rate + integration timeLogger memory100 samples (spectral data), 10000 samples (irradiance)Manual operation3 function keys (push-button)DisplayMonochrome, 56 mm x 49.5 mm, resolution 117 DPI, backlightDimensions (length x width x height)basic body BTS256-UV-1 und BTS256-UV-3: 148 x 92 x 13, basic body BTS256-UV-2: 148 x 92 x 12 mmPower supplyCharging via USB interface battery packInterfacesUSB 2.0 (type mini USB)Operating temperatureHousing: max. t.b.c.SoftwareS-BTS256, S-SDK-BTS256 (Supplement)Weight275 g