HT307 is a digital luxmeter for measurements of illuminance and lighting up to 200 kLux, extremely compact and easy to use. The peculiarity of this model is the built-in photo sensor witch permits to perform rapid tests by one hand only. The instrument has a built-in DC analogue output (mV) proportional to illuminance measured by input sensor, which can be combined with an external multimeter or data logger. Other important features are the spectral response correction and the cosine correction of angular incidence of light. HT307 complies with international CIE Standards on spectral response. This model is the ideal solution to control and verify domestic and industrial environments.