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FAQ
Q Is IP68 always better than IP67?

No. As we mentioned earlier, blindly choosing IP68 protection can not only lead to unnecessary cost increases but also affect the heat dissipation efficiency of the luminaires due to excessive sealing, thus shortening the LED lifespan. For most outdoor lighting applications, IP65 or IP67 is a sufficient and optimal choice. Only when the luminaire truly needs to be completely submerged for extended periods is choosing an IP68 product correct and necessary.

Q Are LED drivers dimmable by default?

No. Only dimmable LED drivers support dimming. The driver must also be compatible with the dimming method used, such as 0–10V, Triac, or DALI.

Q Can one LED driver power multiple LED strips?

Yes. A constant voltage LED power supply can power multiple LED strips as long as the total wattage does not exceed the power supply’s rated capacity and proper wiring is used.

Q Why is my LED driver making a buzzing noise?

A buzzing noise from an LED driver is often caused by electromagnetic interference (EMI) or vibration in the components. The most common causes are:

1. Dimming Compatibility: If the LED driver is dimmable, certain dimmer switches or incompatible dimming technologies (e.g., TRIAC) can cause buzzing.

2. Capacitor issues: Aging or low-quality capacitors may vibrate or emit noise.

3. High-frequency switching: Some drivers operate at high frequencies that can produce audible noise, especially in poorly shielded units.

4. Overloading: An overloaded driver may cause stress on components, leading to noise.

Q Do you support adding logos to the products?

Yes, we provide this service.

Q What technical support do you provide?

We Sunshineopto provide optical design and testing, optical distribution design, electrical and circuit design (how to match the appropriate power supply). We also provide optical design for complete lighting fixtures.

Q How many lens molds do you have?

We Sunshineopto have extensive engineering experience and over 3000 LED lens molds for you to choose from. Our mold opening fees are also more cost-effective compared to our competitors.

Q For a new brand, do you recommend starting with OEM or ODM?

This depends on your primary goals. ODM is usually a faster and more economical option, allowing you to launch mature products without upfront R&D investment. Once your brand is established, you can then create differentiated products through OEM.

Q How to make an LED light circuit board?

Quotation & Designing→Cutting→Grinding boards→Dry film lamination→Exposure→Developing & Etching Stripping→Circuit inspection→Drilling→Solder mask preparation→White solder mask exposure→White solder mask development→Hot air solder leveling→Silkscreen printing→CNC routing→PCB inspection→SMT assembly→Lighting test→Packaging & Shipping.

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Q If leds in pcb need ground?

General LED lights have double insulation design, if they work at low voltage, they do not need to be grounded and can work normally.

However, if the voltage is too high or it is humid, or if it isa Class I lamp (LED street lamp, floodlight), grounding the LED lamp can effectively ensure our safety, avoid electric shock and fire, and protect the LED components from damage.

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