That means they convert 80 of the energy they use into light.
Are all led lights the same. Cheap and expensive LED grow lights are not the same. The main difference is that they use far less energy. With good LED lights they draw fewer watts electric energy while producing brighter light as compared to regular grow bulbs.
Opaque cover is not always for good lighting. A spot light cant make enough illumination in drawing room. You may have had your own experience with a grocery store bulb that said it would last 9.
Lumen maintenance depends on several factors. Consumers not comfortable with or preferring to avoid electrical wiring work lighting installations where electrician labor costs are high Disadvantages. This guide provides some practical tips to purchasing a quality LED product.
Not every recessed light fixture is the same so heat issued are all different. This means each LED in the circuit will be the same brightness and will not allow a single LED to hog more current than another. In the case of cool whites that different color is a slight blue hue.
Not all PAR light contributes to photosynthesis equally though we now understand that other wavebands of light such as green do play an important role in this process. An RGB LED light strip works on the same principle. For example a 7W Philips LED bulb is just as bright as a 60W traditional light bulb or a 12W energy saving stick.
When designed well LED lighting is more efficient versatile and lasts longer. Not all LEDs are the same. LED bulbs emit the same amount of light as traditional light bulbs energy saving sticks and twisters.

