HIGH ACCURACY MEASUREMENT: Professional light meter delivers precise readings within ±4% ±0.5% full scale, insure reliable results for photography studios, greenhouse monitoring, and workplace safety inspections WIDE DETECTION RANGE: Measures illuminance from 1 to 50000 lux across three ranges (2000/20000/50000 lux), perfect for testing various environments from dim workshops to bright outdoor spaces CLEAR LCD DISPLAY: Features 3.5-digit screen with maximum 1999 reading and data hold function, allowing you to lock and record measurements without constantly watching the display during testing COMPACT PORTABLE DESIGN: Lightweight ABS construction at 11.6x7x2.9 cm fits easily in toolkits, making it convenient for electricians and lighting professionals to carry for on-site assessments LONG LASTING PHOTODIODE SENSOR: Built with filtered photodiode technology for consistent performance in 0-40°C environments, providing ±2% repeatability for dependable measurements over extended use