The Complete Guide To Ht Instruments Ht309: Specifications, Pros And Cons, Troubleshooting, And Buying Tips
HT Instruments HT309 Information Introduction The HT309 is a digital luxmeter from HT Instruments. It is a portable device that can be used to measure the illuminance (brightness) of light sources. The HT309 has a wide range of measurement, from 0.1 lux to 400,000 lux, making it suitable for both indoor and outdoor use. It also has a number of features that make it ideal for measuring the illuminance of LED sources, including the ability to set the relevant correction factors. Image