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High precision LED illuminance meter LM-777


Realize weight reduction (90g) that is smaller and smaller than the size of a smartphone!
18 points for data storage, no upper limit when connected to PC.
High-precision meter conforming to JIS general type AA class. Power saving function is equipped with energy saving function and power is turned off after 10 minutes of no operation. The measurement range is 0 to 399900lx.
It is a highly reliable product that can measure LED lighting and conforms to JIS standards. Accurate lighting measurement is required in hospitals, schools, plant factories and supermarkets.


classCompliant with JIS C 1609-1: 2006 general type AA class
Light receiving elementSilicon photodiode
display4 1/2 digit LCD display (with backlight)
Measurement cycle2.5 times / second
Measurement rangeAuto range
Measurement range0-3,999,000 lux
Oblique light characteristics10°±1%、30°±2%、 50°±6%、80°±25%
Visible relative
Spectral response acquisition
Within 6% of deviation from standard spectral luminous efficiency
Fatigue properties±1%
Temperature characteristics±3%
Humidity characteristics±3%
Display unitLux / Foot Candela
accessories3V battery (2 CR2450)
Operating temperature / humidity0 ° C to 50 ° C, 80% RH (no condensation)