Measures illuminance (Lux, footcandle) in the field, meeting CIE photopic spectral response and is fully cosine-corrected for the angular incidence of light.

The HT-1309 digital illuminance meter is a precision instrument and is compact, tough and easy to handle.

The light sensitive component is a very stable, long-life silicon photo diode and spectral response filter.

Supplied with Windows compatible software for transferring data to a computer, removable rubber protective holster (including tilt stand), USB cable, carry case and 9V battery.