LED dimming control technology
Are all LED lights dimmable?
No, not all LED lights are dimmable. A dimmable LED bulb requires a built-in dimmable driver to safely adjust brightness. Installing a non-dimmable LED bulb on a dimming circuit may cause flickering, buzzing, unstable performance, or early bulb failure.
Can I use a standard dimmer for LED lights?
In many cases, standard incandescent dimmers are not ideal for LED bulbs because they often require a higher minimum load. For smooth and stable dimming, Tecolite dimmable LED bulbs should be paired with compatible LED dimmers, trailing-edge dimmers, or tested smart dimming systems.
What is the difference between Triac and 0-10V dimming for LED bulbs?
Triac dimming uses phase-cut control through existing electrical wiring, making it a popular and cost-effective solution for retrofit LED bulbs in residential, retail, hotel, and hospitality projects. 0-10V dimming is more commonly used in commercial lighting systems or fixtures with compatible control modules and low-voltage signal wiring.
What CRI options are available for your dimmable LED bulbs?
Yes. Tecolite offers standard Ra80, high CRI Ra90, Ra90 (HO), Ra95, and Ra98 options for selected dimmable LED spotlight bulb models. Standard Ra80 is suitable for general lighting, while Ra90 and above provide more accurate color rendering for hospitality, retail, galleries, museums, restaurants, and high-end residential projects. Ra90 (HO) is available for applications that require both high color rendering and higher light output.
Why do LED lights flicker when dimmed?
Flickering usually happens when the LED bulb, dimmer, and circuit load are not properly matched. Common causes include dimmer incompatibility, unstable input voltage, or insufficient minimum load. Tecolite can help customers select compatible dimmers and test dimming performance before bulk orders.
Why do some dimmable LED bulbs buzz or hum when dimmed?
Buzzing or humming is often caused by circuit resonance between the phase-cut dimmer and the LED bulb’s internal driver components. Tecolite dimmable lamps are engineered with high-quality electronic filtering circuits to reduce audible noise and deliver stable, quiet dimming when paired with compatible dimmers.
Do your dimmable LED bulbs use constant current or constant voltage?
Most Tecolite retrofit lamps, such as GU10, MR16, PAR, AR111, and ES111 dimmable bulbs, use built-in constant-current driver circuits for stable output, reliable dimming, and better thermal control. Constant-voltage solutions are more common in LED strips or customized lighting modules.
Does dimming extend the lifespan of LED lights?
Dimming can help extend LED lifespan because lower brightness reduces operating current and heat. However, actual lifetime also depends on thermal design, ambient temperature, LED chip quality, and driver reliability.
How do I stop LED lights from glowing when turned off?
This “ghosting” effect usually happens when a small residual current remains in the circuit, often caused by smart dimmers, illuminated wall switches, or wiring design. Installing a dimming bypass resistor or switching to a 3-wire dimmer with a neutral connection can usually solve this issue.
Manufacturing and Production
Do you support OEM/ODM branding services?
Yes. Tecolite offers OEM/ODM manufacturing for dimmable LED bulbs and spotlight lamps. We can customize wattage, voltage, color temperature, beam angle, housing color, logo marking, and private-label packaging according to your brand or project requirements.
What is your average production lead time?
For standard dimmable LED bulb and spotlight orders, production lead time is typically 2-3 weeks. Custom OEM projects, private-label packaging, or large-volume wholesale orders may take 4-6 weeks, depending on material availability and order complexity.
What is the MOQ for custom LED bulbs?
Our MOQ is flexible for standard factory models. For custom packaging, special beam angles, unique housing finishes, or private-label requirements, the MOQ usually starts from 500 to 1,000 units per model.
What brands of LED chips do you use?
Tecolite uses reliable, industry-recognized LED chips from selected premium suppliers, depending on product requirements and customer specifications. This helps ensure stable lumen output, good color consistency, and excellent color rendering.
Is your factory ISO certified?
Yes. Tecolite’s manufacturing system is certified to ISO 9001:2015 quality management and ISO 14001:2015 environmental management standards. The certified scope covers the design, production, and sales of LED light sources, supporting stable quality control for our dimmable LED bulb production.
What are your quality control standards?
We apply strict IQC, IPQC, and final inspection procedures. Our dimmable LED bulbs undergo full-load aging tests, electrical safety checks, optical testing, and rapid on-off switching checks before packaging to help ensure stable driver and chip performance.
Do your LED bulbs have CE, RoHS, and CB certifications?
Yes. Tecolite’s main LED bulb series are supported by international compliance documents, including CE, RoHS, CB, EMC, and LVD certifications for selected models. Certification availability may vary by product series, so please contact us for the latest certificates and test reports for your target model.
What is your product defect rate?
Through strict quality control, reliable component sourcing, and production testing, Tecolite maintains a low factory defect rate for shipped lighting products. Specific quality targets can be discussed according to product type and order requirements.
What equipment supports your production quality?
Our workshop uses production lines, SMT placement equipment, aging test systems, integrating spheres, and optical testing instruments to support stable manufacturing quality and consistent product performance.
Customer Service and Support
Can you support custom circuit design for dimmable LED bulbs?
Yes. Tecolite provides circuit design support for dimmable LED bulbs and lighting products. Our engineering team can adjust internal driver design, wattage, input voltage, dimming range, flicker control, power factor, and thermal performance according to your project requirements.
Do you provide optical design support?
Yes. We offer optical design support for dimmable LED spotlight bulbs, including beam angle selection, lens matching, reflector design, anti-glare solutions, and light distribution optimization. Common beam angles include narrow, medium, and wide options for retail, hotel, gallery, and residential applications.
Can you customize the structural design of LED bulbs?
Yes. We can modify housing dimensions, heat sink structure, appearance, and surface finish to help our dimmable spotlight bulbs match existing fixtures, tracks, recessed downlights, or project-specific installation conditions.
Do you offer software support for smart dimming projects?
Yes. For selected smart lighting and control projects, Tecolite can support software-related adjustments, such as dimming curve adjustment, fade timing, control logic, and compatibility optimization with specific smart dimming systems. Project feasibility depends on the product type and control platform.
Can Tecolite support lighting system integration?
Yes. We can assist with lighting system integration for dimmable LED bulb projects, including dimmer matching, driver compatibility, control system testing, and installation troubleshooting. Our team can test selected dimmers or control systems before bulk orders to reduce onsite dimming issues.
Do you provide custom packaging design?
Yes. Tecolite provides B2B packaging design support, including private-label boxes, neutral packaging, reinforced export cartons, inner protection, barcode labels, and project-specific packaging solutions for wholesale and OEM customers.
Do you offer free samples or prototyping?
Yes. Free samples or prototype support may be available for qualified B2B customers, distributors, and project buyers. Sample terms depend on the product model, customization level, and project background. Sample costs may be refunded or credited after bulk orders are confirmed.
Do you provide free pre-sales technical consultation?
Yes. Tecolite provides free pre-sales technical consultation for B2B lighting projects. We can help customers choose suitable dimmable LED bulbs, beam angles, color temperatures, CRI levels, dimming methods, and compatible dimmers based on the project space and application.
Do you provide free after-sales technical support?
Yes. Tecolite provides free after-sales technical support for our customers. If flickering, buzzing, glowing, dimmer incompatibility, or installation issues occur, our technical team can help troubleshoot the problem through photos, wiring information, dimmer model checks, test reports, or video calls.
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