Digital Light Meter with CCT: Measures illuminance (0.5-300,000 LUX), color temperature (2500K-8000K ±5%), and CRI (20-100 Pa ±2) on SK-8202 model; features a responsive digital display with multi-screen readout for simultaneous data viewing; includes HOLD function, LUX/FC unit toggles, and auto-off for energy efficiency. Color Temperature Tester: deviseed for professional lighting evaluation in hotels, classrooms, hospitals, and homes; accurately assesses LED lights, desk lamps, sunlight, and other indoor or outdoor sources; make sures precise brightness measurement across diverse surroundings with 100° incident angle and 400nm-700nm spectral range. LED Illuminance Meter: Equipped with fast 4-times-per-second sampling rate and high 10,000:1 resolution for real-time, repeatable readings (±2% repeatability); constructed with long lasting plastic housing in compact-sized 100 x 55 x 26mm size; operates on 2 x AAA batteries (not included) for portable use. Brightness Measurement Device: Offers two models – SK-8201 for basic illuminance and CCT testing, or SK-8202 with added CRIndex support; provides clear digital interface with easy-to-use buttons; optimizes usability for field technicians, deviseers, and facility managers requiring reliable test data. Lux Meter for Lighting Assessment: Suitable for industrial, commercial, and residential applications; delivers accurate stems under surroundingal conditions from -10°C to 50°C (<80% RH); calibrated for consistent achievement in color rendering and light intensity analysis; supports informed decisions in lighting devise and optimization.