Advanced Light Meters The PerfectPrime 531 LED Light Meter light meter is a great tool for conducting simple lighting assessments. It comes with a removable probe, which allows for convenient one-handed operation or the ability to position the sensor away from your body. Additionally, its broad measurement range makes it well-suited for gauging outdoor lighting levels. Features User Adjustable Parameter For Special Light SourceMeasure Most Popular Light Sources In Lux or FcRemovable Probe For Easy Access To The SourceCosine And Color Corrected MeasurementsBuilt-in Sensor With Protective CoverMin/Max Average And Auto Power OffLarge LCD Display For Easy ReadingMax/Min Function Applications Cinematography and photography applicationsEnvironmental monitoring(e.g. Warehouses, factories, Hospitals, other healthcare buildings and Garages and car parks)Lighting system installation(e.g. Building commissioning, operation, maintenance and Building security)Interior design projects (e.g. Museum exhibits, art galleries, Commercial office buildings, Hotels and restaurants, Public buildings, Schools and other educational buildings, Libraries, Stadiums & sports and leisure buildings)Industrial applications Key Description Battery capacity indicatorAuto power off indicatorMinimum value indicatorMaximum value indicatorValue hold indicatorSet light source mode indicatorIllumination valueIllumination Unit indicatorRange indicatorLight source correction value choice indicator One Set Included 531 Light Meter x1Manual x1Certificate of Traceable Calibration x1 Certificate of Traceable Calibration : Calibrated using Standards of NIST/USA or National Measurement Laboratory R.O.C (NML/ROC) PerfectPrime 531 LED Light Meter Technical Performance Measuring Range: 0.0 to 199.9/1999/19990/199900 lx Automatic/manual selection of rangeResolution: 0.1 Lx ; 0.1 fcAccuracy: ±3%rdg, ±5dgts (standard A light source)Response Time: 0.5 secTemperature characteristics: ± 0.1% / °C (away from 25°C)Battery: Size AA battery x 2Dimensions: 169x63x37 mmWeight: Approx.210gMeter Made in Taiwan Light meters measure light levels or light pollution within the environment It’s a key piece of equipment to ensure that there is the right amount of ambient light within the workplace, at school or even at home, and are often used by photographers in studios and natural environments to calibrate film camera equipment. Light meters measure light levels or light pollution within the environment It’s a key piece of equipment to ensure that there is the right amount of ambient light within the workplace, at school or even at home, and are often used by photographers in studios and natural environments to calibrate film camera equipment. PerfectPrime 530 Light Meter PerfectPrime 531 LED Light Meter PerfectPrime 532 UV Light Meter Add to Cart Add to Cart Add to Cart Customer Reviews — — 4.0 out of 5 stars 3 Price $99.99$99.99 $119.99$119.99 $99.99$99.99 Measuring Range 0.0 to 199.9/1999/19990/199900 lx 0.0 to 19.9/199.9/1999/19990 fc Automatic/manual selection of range 0.0 to 199.9/1999/19990/199900 lx 0.00 to 19.99/199.9/1999/19990 fc Automatic/manual selection of range 1 to 3999 uw/cm2 0.01 to 39.99 mw/cm2 Fully Covering UVA and UVB Resolution 0.1 lx ; 0.1 fc 0.1 lx ; 0.01 fc 1 uw/cm2 ; 0.01 mw/cm2 Sensitivity Wavelength Region no data no data 260nm~395nm Accuracy ±3﹪rdg ±5 dgts (Calibrated to standard incandescent lamp 2856 ˚K, standard A light source) ±3﹪rdg ±5 dgts (standard A light source) 8% Other visible light source ±3﹪rdg ±5 dgts (UV light source) Temperature characteristics ±0.1% / ℃ (away from 25℃) ±0.1% / ℃ (away from 25℃) ±0.1% / ℃ (away from 25℃) Operation Temperature & Humidity 0℃ ~ 40℃(32℉ ~ 104℉)/ 0 ~ 80﹪RH 0℃ ~ 40℃(32℉ ~ 104℉)/ 0 ~ 80﹪RH 0℃ ~ 40℃(32℉ ~ 104℉)/ 0 ~ 80﹪RH Light detector SI Photodiode SI Photodiode UV Photo Diode Light source selection Standard Incandescent Light Source L0: Standard Incandescent Light Source L1: LED White Daylight L2: LED Amber( Yellow) Light L3: LED Green Light L4: LED Red Light L5: LED Blue Light L6: Warm White Fluorescent Lamp L7: Cold White Fluorescent Lamp L8: User Setup Mode Storage Temperature & Humidity -10℃ ~ 50℃(14℉ ~ 122℉)/ 0 ~ 70﹪RH -10℃ ~ 50℃(14℉ ~ 122℉)/ 0 ~ 70﹪RH -10℃ ~ 60℃(14℉ ~ 14℉)/ 0 ~ 70﹪RH Dimensions 169(L) x 63(W) x 37(H) mm 6.7 (L)x 2.5 (W) x 1.5 (H) inch 169(L) x 63(W) x 37(H) mm 6.7 (L)x 2.5 (W) x 1.5 (H) inch 169(L) x 63(W) x 37(H) mm 6.7 (L)x 2.5 (W) x 1.5 (H) inch