| Application | Intended installation environment | Define whether the product is for bedrooms, hospitality, retail displays, offices, outdoor covered areas, or portable use. | Request an application-specific product brief, installation limitations, mounting instructions, and environmental operating conditions. | High |
| Light Color | Color temperature range | Fixed warm white: 2,700–3,000 K; adjustable white: approximately 2,700–6,500 K, depending on the intended mood-lighting effect. | Require measured CCT data for each setting and confirmation of the available color-temperature control method. | High |
| Color Quality | Color rendering performance | CRI (Ra) of at least 80 for general decorative use; CRI 90 or higher for hospitality, retail, and appearance-sensitive applications. | Request an independent or calibrated test report showing CRI and, where relevant, R9 performance. | High |
| Brightness | Luminous output and dimming range | Define the required lumens according to room size and mounting distance. Specify smooth dimming from 100% to at least 10%; lower levels should be validated for flicker and stability. | Request photometric test data, dimming curves, minimum stable output, and a physical sample for evaluation at low brightness. | High |
| Light Distribution | Beam angle and optical uniformity | Choose approximately 24°–40° for accent lighting, 60°–120° for broad ambient lighting, or a diffused output for soft decorative illumination. | Request an IES or equivalent photometric file, beam-angle data, and photographs showing uniformity without visible hot spots. | Medium |
| Color Control | RGB or RGBW functionality | Use RGB for saturated color effects; use RGBW when both saturated colors and a separate high-quality white channel are required. | Request a color-mode demonstration, color transition video, control protocol details, and confirmation that white output uses a dedicated white LED channel when specified. | High |
| Flicker Control | Temporal light modulation | Specify a flicker limit suitable for the application and require stable operation across the complete dimming range. Measurement should identify modulation percentage and frequency. | Request flicker test results measured at 100%, 50%, 25%, and minimum brightness using a recognized photometric method. | High |
| Electrical Input | Rated voltage and frequency | For direct mains products, define the destination-market input, such as 100–240 V AC, 50/60 Hz. For low-voltage products, specify the exact DC voltage and adapter requirements. | Request electrical ratings, power-consumption data, power-factor data where applicable, and compatibility confirmation for the intended market. | High |
| Energy Use | Rated power and standby consumption | Set a maximum wattage based on the required lumen output and define a standby-power limit for products with wireless controls or remote receivers. | Request measured input power at full output, typical output, minimum output, and standby mode. | Medium |
| Protection | Ingress protection rating | IP20 is generally suitable for dry indoor locations; IP44 or higher may be required for splash-prone areas; outdoor use should be specified with an appropriate higher IP rating. | Request the applicable ingress-protection test report and confirm that connectors, cable exits, switches, and housings meet the same intended protection level. | High |
| Thermal Design | Operating temperature and heat management | Define the operating range, for example 0°C to 40°C for typical indoor use, and require a heat sink or thermal path appropriate to the LED power density. | Request thermal-test results, maximum case temperature, derating information, and confirmation that the product does not rely on unsafe enclosure temperatures. | High |
| Reliability | LED lifetime and warranty basis | Prefer an L70 lifetime claim supported by operating conditions and testing. A typical target for quality indoor products is 30,000–50,000 hours, subject to thermal and electrical conditions. | Request LM-80 data for LED packages where available, a TM-21 projection or equivalent methodology, warranty terms, and exclusions. | High |
| Consistency | Color binning and unit-to-unit variation | Specify a consistent color-tolerance target, such as a maximum of 3–5 SDCM for visually matched products, depending on the application. | Request the LED binning policy, incoming inspection records, color-tolerance limits, and a sample comparison from different production lots. | High |
| Controls | Control interface and compatibility | Define the required control method: push button, infrared remote, RF remote, Bluetooth, Wi-Fi, DMX, DALI, or another specified interface. | Request the control protocol, pairing procedure, maximum control distance, software or app requirements, and interoperability limitations. | Medium |
| Safety | Electrical and material safety compliance | Select the safety requirements applicable to the destination market, including electrical safety, electromagnetic compatibility, restricted substances, and charger or adapter regulations where relevant. | Request current third-party test reports and declarations applicable to the exact model, rated input, adapter, and production configuration. | High |
| Mechanical Design | Housing material, dimensions, and mounting | Define housing material, finish, dimensions, weight, cable length, mounting orientation, diffuser type, and access requirements for installation or service. | Request dimensioned drawings, material specifications, tolerance information, assembly instructions, and a production sample. | Medium |
| Production Quality | Inspection and traceability plan | Require incoming-material inspection, functional testing, safety testing where applicable, burn-in or aging criteria, and lot-level traceability. | Ask for the quality-control flow chart, inspection checklist, defect classification, sample size, corrective-action process, and lot-code format. | High |
| Validation | Pre-production sample approval | Approve a golden sample before mass production, including brightness, color, control behavior, dimensions, packaging, and labeling. | Use a signed approval sheet with measurable tolerances and require written authorization for any component or specification change. | High |
| Packaging | Transport protection and labeling | Specify individual protection, carton quantity, drop-test expectations, moisture protection where needed, product labels, serial or lot codes, and user instructions. | Request a packaging sample, carton dimensions, packaging-material specifications, shipping-mark artwork, and transport-test results when available. | Standard |
| After-Sales | Spare parts, failure handling, and support | Define the warranty period, response time, replacement policy, spare-part availability, firmware support, and procedure for handling field failures. | Request a written warranty document, RMA procedure, failure-analysis format, support contact process, and product-change notification policy. | High |