LED lamp brightness should be tested with specific instruments that measure light intensity in lumens and power consumption with a watt meter. Dividing these two yields a value known as lumens per watt (Lm/W), Read More
Tags :20W COB LED
LED lamp brightness should be tested with specific instruments that measure light intensity in lumens and power consumption with a watt meter. Dividing these two yields a value known as lumens per watt (Lm/W), Read More