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Digital Light Meter Illuminance Lux Meter with Record Function, 0~200,000 Measurement Range Flexible Sensor Light Tester for Photography, Plants, Indoor, Outdoor: Amazon.com: Industrial & Scientific
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Amazon.com : Light Meter, XRCLIF Handheld Lux Meter for Ambient Light Intensity Monitoring, Digital Photometer Range up to 200,000 Lux, Photo Illuminance Sensor with MAX/MIN Data Hold for Grow Plants Led :