High-Precision Optical Sensor -The SPF stroboscopic color illuminance meter is a portable spectral stroboscopic meter developed for on-site healthy lighting testing that integrates stroboscopic and illuminance measurement functions. It can perform rapid testing. It can test flicker percentage, flicker index, flicker frequency, flicker waveform, etc. -With built-in WIFI function, the main unit and probe can be separated for flexible long-distance measurement -Built-in battery and memory card can be used to measure and save at any time -Large touch screen for human-computer interaction, Manufacturer: MTHCKXJBSUZ