FAQs List

Company Profile

What about SUNME?

As a professional LED lighting manufacturer in China, We have more than 10+ years of experience in the commercial lighting, including led downlights, ceiling lights, track lights, spotlights and led downlight modules with various types of models and customized products available.

Do you have any certificates?

ISO9001 / ISO14001 / CCC/CE/UKCA/ERP and ROSH

Do you offer OEM/ODM service?

Yes, we extend a warm invitation to ODM/OEM partners who wish to join hands with us.
Sunme Lighting, we specialize in providing top-notch OEM/ODM services. Our R&D team has rich experience in developing LED lighting
If you have any upcoming project developments or specific product requirements, you can conveniently fill out the contact form or simply send us an email. Our teams are committed to providing the best possible support.

Do you offer customization services?

We offer customize service according to your lighting needs such as different dimension / color and lighting effect that you want.

Do you have MOQ?

We highly value our collaboration with customers, adhering to the spirit of mutual benefit.
Sunme Lighting provides full support without setting a minimum order quantity (MOQ).

About warranty?

In general, we offer 3 years warranty and 5 years available.

What driver brand you use?

Osram/Tridonic/Philips/KGP/Eaglerise/Lifud are available depending on which you prefer.

What adapter brand you use?

Powergear/Global/Unipro/KGP/Osram/Tridonic/Philips/VS are available depending on which you prefer.

What LEDs brand you use?

Bridgelux/Citizen/Philips/Cree/Osram/Luminus are available depending on which you prefer.

What about lead time?

Our sample time is about 7-10 days and mass production time is about 25-35 days, depending on the quantities you need and the key materials stocked.

What kind of product information is available?

We can offer you the full set database such as specifications/HD pictures/line drawing/IES files/3D Drawing/presentation video.

Power Supply

What dimming options are available?

There are three ways of dimming, namely wired dimming, wireless dimming and built-in dimming. Wired dimming including Triac dimming, 0/1-10V dimming, DALI dimming, wireless dimming including Bluetooth dimming, ZIGBEE dimming, WIFI dimming, RF dimming, built-in dimming refers to the lamps and lanterns above the knob can be adjusted to the brightness of the lamps and lanterns.

How to choose flicker free driver?

Flicker free driver is common in two programs, one is a low PF value of the driver, such as PF value of less than 0.5, this driver is flicker free, generally more commonly used for power below 15W. Another is the PF value > 0.9, this driver in the purchase of special requirements for flicker-free function, generally used for power over 15W.

How to choose triac dimming?

There are two main types of LED dimming: leading edge and trailing edge. The two methods differ in the way they control the voltage of the LED lights, which can affect the operation of the dimmer.

What is DALI?

In simple terms, DALI is a digital way of managing modern lighting. You can as well distinguish it as Digital Addressable Lighting Interface (DALI).
it’s now possible for all DALI components of a lighting system from different manufacturers to work together as long as they contain the DALI logo.
2-Way form of digital communication DALI systems use digital signalsto transfer commands from the control systems to the luminaire and back.
DALI driver have DT6 and DT8 two versions in common, DT6 can only realize the dimming, DT8 can realize the dimming and adjusting color temperature.

What is 1-10V dimming?

The 1-10V dimming method involves a signal transmitted between 1V and 10V. Where 1V showcases the minimum amount of light (only 10%), 10V displays the maximum amount of light for this LED dimming method – at 100%.

A key difference between 0-10V dimming and 1-10V dimming is the different lighting and turn-off voltage. Where 0-10V dimming methods turn on at 0.3V, 1-10V dimming methods turn on at between 0.7 and 0.8V.

What is 0-10V dimming?

0-10V dimming methods work by transmitting a signal between 0 and 10V. As such, the output of the lamp is scaled, providing 100% light output. Naturally, 0V provides the least amount of light output.
0-10V dimming has been tested throughout the years and remains a simplified, but still reliable LED dimming control protocol.
Both the 0-10V and 1-10V dimming method are categorised as an analogue method.

Light Source

What exactly is color consistency?

Some sophisticated manufacturers will describe their color consistency using a metric called SDCM or MacAdam ellipses, both of which refer to the same concept and metric. The unit of measure is a "step" and the larger the number of steps, the larger the variation in color.

In general, color consistency is deemed acceptable when it is within a 5-step SDCM range for standard applications, and 3-step SDCM range for more demanding applications for professional or architectural uses. In some cases, even narrower color tolerances are needed, but most people will not be able to tell that there is any color deviation once consistency reaches 1 or 2 SDCM.

What is Color Rendering Index (CRI) ?

Color Rendering Index (CRI) is a measurement of how natural colors render under an artificial white light source when compared with sunlight. The index is measured from 0-100, with a perfect 100 indicating that colors of objects under the light source appear the same as they would under natural sunlight. CRIs under 80 are generally considered ‘poor’ while ranges over 90 are considered

What exactly happens after ordering?

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What is Color Temperature?

Most LED lighting products are offered in a variety of color temperatures in varying hues of white. Correlated color temperature, or ‘CCT’ in lighting jargon, is a term for how warm (yellow) or cool (blue) the color of light emitted from an LED bulb or fixture appears. It’s measured in units of Kelvin (K) – on a scale of 1,000 to 10,000 – and is easiest to explain in terms of how sunlight works.


How to change the regular CCT to RGB?

Just add a color filter change to RGB easily. New designs from Sunme Lighting.