HT309 is digital light meters used to measure illuminance up to 20kLux (HT307) and 400kLux (HT309) through a silicon photodiode sensor.
Model HT309 also allows measuring illuminance of LED sources with various colours by setting the relevant correction factors, further to measuring luminous intensity (expressed in Candles).
HT Instruments HT309 Handheld Digital LED-Light Lux Meter
Measuring range 0.01÷400klux 0.01÷40kFc Measurement of illuminance in Lux/Fc Measurement of LED sources’ illuminance Luminous intensity measurement (Cd) Internal memory for measured data saving Data HOLD