Amazon.com : BTMETER Digital Illuminance Light Meter BT-881C,Lumen/FC Photometer,Luxmeter Sensor Measure 0.1~200000 Lux (0.01~20000FC) Lights,Bright Tester for Photography, Plant, Foot Candle : Electronics
Amazon.com : UNI-T UT383 Light Meter Lux Meter Lumens Digital Illuminance Meter 0~199,900 Lux (0~18,500 FC) Foot Candles Luxmeter for Film Photography Plants Photometer Lighting Intensity Brightness Measurement : Electronics
Lumens Calculator: How Many Lumens Do I Need for a Room? – Insights
Can A Lux Meter Measure LED Light? - LED & Lighting Info
Measuring Light: Lumens vs Lux | Foxfury Lighting Solutions
How does a Lumen (Lux) Meter work? - HoldPeak Online
Amazon.com : Lux Light Meter for Photography Grow Plants Led Photometer Lighting Intensity Brightness Measurement Pocket Digital Photo Illuminance Sensor : Electronics
Amazon.com: Handheld Digital Light Meter, Lux Meter, Lux/FC Unit, Range 1-200,000Lux, 1-20,000FC Luxmeter Lumen Meter for Plants LED Lights Indoor Outdoor Light Tester : Electronics