LED Flat Panel Light
Specifications
| Type | Direct-lit LED Panel Light |
| Main Models | ZH-PA22DL / ZH-14DL / ZH-24DL / ZH-22DL57 |
| Wattage Range | 21W / 25W / 32W / 60W |
| Input Voltage | 110V/220V; high-efficiency series 100–240 Vac |
| Body Size | 600×600×30 / 1200×300×32 / 1200×600×32 mm |
| Color Temperature | 3000K / 4000K / 5700K |
| Luminous Flux | 3,360 lm / 3,625 lm (ZH-22DL57 high-efficiency series) |
| Luminous Efficiency | 145–165 lm/W (ZH-22DL57 high-efficiency series) |
| CRI | 83 (ZH-22DL57 high-efficiency series) |
| Power Factor | ≥ 0.9 |
| Photobiological Safety | Exempt Group |
| Material | Metal Coating |
Product Features
- High Efficiency and Energy Saving: Luminous efficacy of over 100 lm/W, saving 60% compared to traditional T8 tubes and 40% compared to T5 tubes.
- Long Service Life: LED module lifespan of 30,000 hours; with 8 hours of daily use, it can last over 10 years.
- Three color temperatures: 3000K Warm White, 4000K Natural White, and 5700K Cool White available.
- Flicker-free · UV-free: Protects eyesight and is suitable for spaces requiring prolonged use of the eyes (classrooms, offices, hospitals).
- Uniform Illumination: Direct-view LED modules paired with light guides ensure no shadowing or dark spots.
- Multiple installation options: Recessed, surface-mounted, and suspended—three choices to accommodate various ceiling structures.
- Full Certification: Complies with BSMI, CNS14335, and CNS15436 national standards and the Energy Saving Label.
Application Scenarios
Radiant Star LED panel lights are widely used in the following scenarios:
- Offices / Open-plan Work Areas
- Conference Rooms / Presentation Rooms
- Shopping Malls / Department Stores / Retail Spaces
- School Classrooms / Libraries
- Hospitals / Clinic Waiting Areas
- Government / Public Offices
- Banks / Financial Institutions
- Factory office floors
Three Installation Methods
| Installation Methods | Suitable Spaces | Features |
|---|---|---|
| Recessed | Light-gauge steel frame / concealed grid ceilings | Most commonly used in offices and commercial spaces; flush with the ceiling for an aesthetically pleasing look |
| Ceiling-mounted | Exposed Ceiling / Existing Ceiling | Most commonly used in residential settings; requires no suspended ceiling structure and offers quick installation |
| Suspended | High-ceilinged spaces / Industrial-style design | Suspended by steel cables, height-adjustable, and stylish |
Model Lineup
The following model numbers and specifications are organized from Winstartek LED panel light catalog data for ceiling grid, office, clinic and commercial lighting planning.
Standard Direct-lit Panel Lights
| Model No. | Type | Color Temperature | Wattage | Input Voltage | Lamp Size L×W×H (mm) |
|---|---|---|---|---|---|
| ZH-PA22DL30L-N32 | Direct-lit | 3000K | 32W | 110V/220V | 600×600×30 |
| ZH-PA22DL40L-N32 | Direct-lit | 4000K | 32W | 110V/220V | 600×600×30 |
| ZH-PA22DL57L-N32 | Direct-lit | 5700K | 32W | 110V/220V | 600×600×30 |
| ZH-14DL40-32W | Direct-lit | 4000K | 32W | 110V/220V | 1200×300×32 |
| ZH-14DL57-32W | Direct-lit | 5700K | 32W | 110V/220V | 1200×300×32 |
| ZH-24DL40-32W | Direct-lit | 4000K | 60W | 110V/220V | 1200×600×32 |
| ZH-24DL57-32W | Direct-lit | 5700K | 60W | 110V/220V | 1200×600×32 |
High-efficiency 600×600 Panel Lights
| Specification | ZH-22DL57-21W | ZH-22DL57-25W |
|---|---|---|
| Rated Input Power / Wattage | 21W | 25W |
| Rated Input Voltage / Input Voltage | 100–240 Vac | 100–240 Vac |
| Rated Frequency / Frequency | 50/60Hz | 50/60Hz |
| Power Factor | ≥ 0.9 | ≥ 0.9 |
| Luminous Flux | 3,360 lm | 3,625 lm |
| Luminous Efficiency | 165 lm/W | 145 lm/W |
| Color Temperature | 5700K | 5700K |
| Color Rendering Index | 83 | 83 |
| Photobiological Safety | Exempt Group | Exempt Group |
| Material | Metal Coating | Metal Coating |
| Lamp Size (L×W×H) | 600×600×30 mm | 600×600×30 mm |
LED Panel Lights vs. Traditional T5/T8 Fluorescent Tubes
| Comparison Criteria | Radiant Star LED Panel Lights | Traditional T8 Tubes |
|---|---|---|
| Luminous efficacy (lm/W) | ≥ 100 | 60–70 |
| Lifespan (hours) | 30,000 | 6,000 |
| Energy savings | 60–80% energy savings | Standard |
| Flicker | Flicker-free | Flickering |
| Ultraviolet (UV) | None | Present |
| Contains mercury | Does not contain | Contains mercury |
| Recovery period | 1.5–2 years | — |
Frequently Asked Questions (FAQ)
Q1. What is an LED panel light?
An LED panel light is a slim, flat lighting fixture that uses LEDs as its light source. The standard size is 60×60 cm (suitable for standard light-gauge steel grid ceilings). It provides uniform illumination, is flicker-free, and emits no UV rays, with a luminous efficacy of over 100 lm/W. It is widely used in offices, conference rooms, shopping malls, schools, and hospitals.
Q2. What is the difference between LED panel lights and traditional T5/T8 fluorescent tubes?
Compared to traditional T5/T8 fluorescent tubes, LED panel lights are 60–80% more energy-efficient, last 5–10 times longer (30,000 hours vs. 6,000 hours), contain no mercury or UV radiation, are flicker-free to protect eyesight, and provide uniform illumination without shadowing.Although the initial cost is higher, the investment pays for itself in 1.5–2 years, resulting in a lower total cost of ownership.
Q3. What size space is suitable for a 60×60 cm panel light?
For a space of one ping (approximately 3.3 square meters), we recommend installing one 40W 60×60cm panel light to achieve standard office illuminance (500 lux). Each 60×60cm grid in a light steel frame ceiling corresponds to one light, making this the most common office lighting configuration.
Q4. How do I choose between 3000K, 4000K, and 5700K color temperatures?
3000K warm white light is suitable for homes, restaurants, and shopping malls; 4000K natural white is suitable for offices, conference rooms, and classrooms; 5700K cool white light is suitable for factories, laboratories, and hospital operating rooms. Radiant Star offers LED panel lights in all three color temperatures.
Q5. What is the difference between direct-lit and edge-lit panel lights?
Direct-lit panel lights emit light directly from the back, offering excellent heat dissipation, high luminous efficacy, and minimal shadowing. They are suitable for office spaces requiring uniform illumination, but they are relatively thick (approximately 50 mm). Edge-lit panel lights diffuse light through a light guide plate on the side, allowing for ultra-thin designs (under 10 mm). However, they have poorer heat dissipation and slightly lower luminous efficacy, making them suitable for spaces where thickness is a concern.
Q6. How energy-efficient are panel lights?
Radiant Star LED panel lights achieve a luminous efficacy of over 100 lm/W. Compared to traditional T8 fluorescent tubes (approximately 60–70 lm/W), they offer energy savings of about 60%, and compared to T5 tubes, they offer savings of about 40%.A single 40W panel light can replace a traditional 2×40W tube combination, saving approximately 1,200 kWh per light per year.
Q7. What certifications have Radiant Star flat panel lights obtained?
The entire Radiant Star LED panel light series has passed BSMI safety certification, CNS14335 and CNS15436 national standards, and the Energy Saving Label certification; some models have also received the Energy Efficiency Label. All products are designed and manufactured in Taiwan and comply with the necessary regulations for sale in the Taiwanese market.
Q8. How many installation methods are available for panel lights?
There are three installation methods for panel lights: ① Recessed — suitable for light steel frame or concealed ceiling systems, most commonly used in offices; ② Surface-mounted — directly fixed to the ceiling surface, suitable for homes and existing ceilings; ③ Suspended — suspended using steel cables, suitable for high-ceiling spaces or industrial-style designs. Radiant Star provides the corresponding accessories for all methods.
Q9. What is the lifespan of the panel lights? How long is the warranty?
Radiant Star LED panel lights have a rated lifespan of 30,000 hours (approximately 10 years with 8 hours of daily use). We offer a full 3-year warranty, covering free replacement or repair for non-human-caused damage during the warranty period.
Q10. What size options are available for panel lights?
Radiant Star panel lights are available in four sizes: 30×30 cm (single panel), 60×60 cm (standard single panel for light steel frames), 30×120 cm (double-panel long strip), and 60×120 cm (double-panel large size). Wattage options include 18W, 25W,36W, 40W, 45W, and 72W, allowing for flexible selection based on spatial requirements and illuminance standards.