Amazon.com: Light Meter, lux Meter AP-881E Recording Light Meter for Plants with Display 3999(Range from 1~300,000Lux), Lux/Fc Unit, MAX/MIN, Back Light, Data Hold, Data Storage : Electronics
Amazon.com: INFURIDER Digital Illuminance Light Meter with 300,000 Lux Foot Candles Luxmeter and 270° Rotatable Detector for Indoor Plants Lighting and Photography Measurement : Electronics