
Buying Guide

Hydroponic growers measuring LED grow light intensity pick YW-552M.
Horticulture Key Specs
0–200,000Lux ultra-wide range covers low seedling lights and high-power bloom lamps.
Max/min mode captures peak light intensity at canopy height.
HOLD lock to record readings after moving sensor away from hot lamps.
Small integrated spherical photosensitive probe easily fits between plant leaves.
Unit Switch Tip: Toggle Lux/Fc to match grow lamp manufacturer specifications.
Facility managers checking desk, classroom lighting compliance standards.
Office/Classroom Functions
Auto-ranging sensor auto adjusts without manual gear switching.
2 samples per second fast refresh to scan uneven overhead lighting.
Backlit screen for windowless low-light office testing.
Compact pocket size to carry between multiple room inspections.


Content creators, studio photographers measuring fill light and key light brightness.
Creator Advantages
Wide 0–200,000Lux handles dim indoor shoots and bright natural window light.
Max value mode locks peak highlight brightness exposure reference.
Button beep toggle off during quiet shooting sessions.
Lightweight 90g body slips into camera gear bags.
Road construction crews testing public street lamp brightness compliance.
Outdoor Field Design
High-sensitivity spherical probe measures distant lamp illumination.
Auto shutoff prevents battery drain during multi-site construction rounds.
Dust-resistant ABS shell withstands outdoor construction site conditions.
Lux/Fc dual units match municipal lighting engineering standards.


Home decor, aquarium, small plant hobbyists entry-level YW-552M selection guide.
Hobbyist Value Points
Low price, no complicated calibration required (factory pre-calibrated).
Backlight, data hold, max/min, auto range all core functions included.
3 AAA standard batteries widely available for hobby users.
Smooth rounded probe surface no scratch risk to lamp covers/aquarium glass.
