For rapid light measurements
*Three measurement ranges
*Light sensor attached to 1.5 meter coaxial cable
*Rugged, waterproof case
Hanna's light measuring sensor is a photo diode that converts incident light into an electronic signal that is read and displayed on the metter's LCD as Klx, which is 1,000 lx. Multiply that reading by 92.9 to get the measurement in foot candles.