What is the difference from the cheap illuminometers you see at mass retailers?

LM-777 complies with JIS C1609-1: 2006 general type AA class, and by inputting spectral characteristic data, it is possible to accurately measure the illuminance of each company’s LED.

In addition, it can be connected to a PC, and if you install the attached software, you can input and record the illuminance in the CSV file.

LM-555 is a JIS C1609-1: 2006 general type A class compact illuminance meter.
Illuminance can be measured with high accuracy and simple operation with the touch of a button.

LM-111 is the lowest cost type in the series.
Similar to LM-555, high accuracy and easy measurement are possible.