0: No protection

   1: prevented the bigger solid objects invasion

    2: Prevented medium-sized solid objects invasion

    3: Prevented small solid objects invasion

    4: Prevented the larger than 1 mm of solid objects invasion

    5: Prevented harmful dust accumulation

    6: Completely prevented dust invasion

    Waterproof level (the second X)

    0: No protection

    1: Without the influence when water drops into the outer covering

    2: Without the influence When water drops into the outer frame tilt to 15 degrees

    3: Without the influence When water and rainwater drops into the outer frame from

        60 degree Angle

    4: Without the influence liquid by any direction spilled to outer frame

    5: Washing without any damage

    6: Can be used in the compartment in the environment

    7: Used in a short time submerge in the water (1m)

    8: Under pressure long time submerge in the water

Q: What does LED stand for?

A: LED=Light Emitting Diode.

Q: What applications can an LED be used for?

A: LED lights use the low voltage power supply, the power supply voltage in between 6 to 24 V, according to the product features, so it is a more security than using high voltage power supply, especially used in public places.

Q: How do LED lights differ from traditional light sources such as incandescent bulbs, fluorescent lights and high intensity discharge (HID) lights?

A: Unlike other sources of light, LEDs covert electricity directly to visible light and do not produce heat or other forms of radiation such as ultra-violet light.

Q: What are the advantages and challenges of using LED's for general illumination?

A: LEDs have the advantages of high efficiency and durability. These result in energy savings, maintenance savings and overall cost savings over their lifespan.

Q: What is the color temperature?

A: In the following 3300 K color temperature, light color close to red,give us with warm feeling, It's called warm color temperature. Color temperature in 3000- 6000 K for the middle, people in the tonal below without special obvious visual psychology effect, have the feeling of frank; So called "neutral" color temperature. More than 6000 K color temperature, light color slant blue, give a person with cool feeling, called cool color temperature.

Q: What are the environmental advantages of using LED luminaries?

A: LED luminaries contain no mercury or toxic gasses, last longer and produce less waste. In addition they are made from fully recyclable materials so they have a much smaller impact on the environment.

Q: What is junction temperature?How is junction temperature managed?
A: Junction temperature is the temperature at the point where an individual diode connects to its base. Maintaining a low junction temperature increases output and slows LED lumen depreciation. Junction temperature is a key metric for evaluating an LED product's quality and ability to deliver long life. Our company use aluminum heat sinks that are specifically designed to keep the junction temperature as low as possible.

Q: How long will LEDs last?
A: An LED does not burn out in the same way as traditional light sources do. Instead, the diodes gradually produces lower output levels over a very long period of time (lumen depreciation). Generally LED life spans are 50,000 hours or longer. If one LED fails, it does not stop the lamp from continuing to work.

Q: What is lumen depreciation?

A: The life span of an LED is vastly longer than that of incandescent, fluorescent or HID light sources. LED are generally rated to last 50,000 hours or 100,000 hours. Although an LED never completely burns out the brightness of the light output by an LED diminishes over time. This diminution is known as "lumen depreciation" and the useable life span of an LED (in hours of operation) is measured by its lumen depreciation

Q: How many years use is 50,000 hours?

A: The life span in years for an LED lamp will depend on how many hours the lamp is in operation each day.

Data as follow (Only for reference)：