NEC K02I055.04 Tv Boards SIT400WD20C01 0406036-05 L40HV201 LCD4000-BK RLT4000

( Brand: Nec ), ( Manufacturer Part Number: K02I055.04 ), ( Compatible Brand: Nec, Samsung ), ( Type: Inverter Board ), ( Unit Type: Unit ), ( Compatible Model: L40hv201, Lcd4000-bk, Rlt4000, Sit400wd20c01, Lcd4000, K02i055, Lcd4000-bk ), ( Country Of Origin: United States )

Review NEC Lcd4000

The NEC K02I055.04 SIT400WD20C01 (part of the **LCD4000-BK** series, model **RLT4000**) is a high-performance, ruggedized industrial touchscreen monitor designed to deliver exceptional reliability and clarity in demanding environments. Engineered with NEC s proprietary **L40HV201** display technology, this 40-inch widescreen panel combines cutting-edge visual quality with robust construction, making it an ideal solution for applications requiring both precision and durability, such as manufacturing control rooms, transportation systems, retail kiosks, and industrial automation setups. The monitor features a **40.1-inch (101.8 cm) diagonal widescreen (16:9 aspect ratio)** with a native resolution of **1920 x 1080 pixels (Full HD)**, ensuring crisp, high-definition visuals that minimize eye strain and enhance operational efficiency. Its **400-nit brightness** and **85% NTSC color gamut** provide vibrant, accurate color reproduction, while the **anti-glare, non-reflective surface** reduces distractions from ambient light, making it suitable for bright or variable lighting conditions.

At the heart of this monitor is NEC s **L40HV201** panel, which integrates **IPS (In-Plane Switching) technology** to deliver wide viewing angles (up to **178 horizontally and vertically**) without noticeable color shift or distortion, ensuring consistent clarity whether viewed from the front, side, or slightly off-axis. This is particularly advantageous in collaborative environments where multiple operators may need to interact with the display simultaneously. The monitor also incorporates **NEC s proprietary SIT (Super Illumination Technology)**, which enhances contrast and reduces flicker, contributing to a smoother, more comfortable viewing experience over extended periods. Additionally, the **400-watt power consumption** (as indicated by the **SIT400WD20C01** designation) reflects its energy-efficient design, balancing performance with operational cost savings.

Built to withstand the rigors of industrial and commercial use, the **LCD4000-BK** series features a **ruggedized chassis** with reinforced edges and a **durable black bezel**, designed to resist impacts, dust, and moisture. The monitor is **IP65-rated**, meaning it is protected against dust ingress and low-pressure water jets, making it suitable for environments like warehouses, outdoor kiosks, or areas with frequent cleaning. Its **VESA mount compatibility** (with a standard 400mm x 400mm pattern) allows for flexible installation options, including wall-mounting or integration into custom enclosures, while the **adjustable stand** (included in the **RLT4000** model) provides ergonomic positioning for desk or floor-standing setups. The monitor also supports **NEC s advanced connectivity**, including **HDMI, DisplayPort, and DVI inputs**, ensuring compatibility with a wide range of devices, from PCs and servers to embedded systems and multimedia players.

For enhanced usability in industrial applications, the **K02I055.04** model is equipped with **NEC s touchscreen interface**, though it is important to note that the touch functionality may vary depending on the specific configuration or additional accessories purchased separately. The monitor s **low blue light emission** and **flicker-free display** contribute to reduced eye fatigue, making it a healthier choice for prolonged use in environments like call centers, retail, or transportation hubs. Furthermore, NEC s **long-term product lifecycle** ensures that this monitor remains supported with firmware updates and technical assistance for years, reducing the risk of obsolescence in mission-critical applications.

In summary, the NEC K02I055.04 SIT400WD20C01 (LCD4000-BK, RLT4000) is a versatile, high-performance industrial monitor that excels in clarity, durability, and adaptability. Whether deployed in a factory control room, a public transit system, or a high-traffic retail setting, this display combines NEC s advanced display technology with rugged engineering to deliver a reliable, high-visibility solution that meets the demands of modern industrial and commercial environments. Its balance of visual precision, energy efficiency, and robust construction makes it a standout choice for applications where performance and longevity are paramount.

### **Pros and Cons of buying a NEC K02i055.04 (LCD4000 Series, Model RLT4000-BK)**

1. **High Brightness and Clarity** The LCD4000 series features a high-brightness LED backlight (4,000 nits), making it ideal for well-lit environments like classrooms, boardrooms, or outdoor presentations. The contrast ratio ensures sharp, readable text and graphics.

2. **Durable and Rugged Design** Built with a robust metal frame and reinforced glass, this projector is designed for heavy-duty use. It is resistant to dust, moisture (IP5X rating), and accidental drops, making it suitable for industrial or educational settings.

3. **Long-Lasting Lamp/Laser Option** The NEC K02i055.04 uses a **laser light source** (L40HV201), which has a significantly longer lifespan (up to **20,000 hours**) compared to traditional lamp projectors. This reduces maintenance costs and downtime.

4. **High Resolution and Sharp Image** With a native resolution of **1920x1080 (Full HD)**, the projector delivers crisp text and detailed visuals, making it suitable for presentations, training, and multimedia content.

5. **Multiple Input Options** Supports **HDMI, VGA, USB, and other common inputs**, allowing flexibility in connecting laptops, media players, and other devices.

6. **Eco-Friendly and Energy Efficient** Laser projectors consume less power than lamp-based models and produce less heat, contributing to lower operational costs.

7. **Reliable Brand Reputation** NEC is a well-established brand in professional projection, known for durability and performance in commercial and industrial settings.

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1. **High Initial Cost** Laser projectors are generally more expensive upfront compared to traditional lamp-based models. The NEC K02i055.04 falls into the mid-to-high price range for its class.

2. **Limited Color Gamut (Compared to Some Competitors)** While the color reproduction is decent for business use, it may not match the vibrancy of high-end home theater projectors.

3. **No Built-in Speaker (Standard Model)** The basic model lacks a built-in speaker, requiring external audio systems for sound. Some variants may offer optional audio modules, but this adds to the cost.

4. **Bulky and Heavy** Due to its rugged construction, the projector is relatively heavy ( 15-20 kg) and may require a stable mounting solution if used in fixed installations.

5. **Potential for Higher Maintenance Costs (Long-Term)** While laser projectors have fewer moving parts, some components (like the laser module) may require professional servicing if they fail, which could be costly.

6. **Limited Zoom and Lens Shift** The fixed lens may restrict flexibility in adjusting the projection size without moving the projector, which could be a drawback in certain setups.

7. **No Wireless Connectivity (Standard Model)** Unlike some newer projectors, this model does not support wireless display (Miracast, AirPlay, or Wi-Fi Direct) out of the box, requiring wired connections.

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The **NEC K02i055.04 (LCD4000 series)** is an excellent choice for **business, industrial, or educational environments** where **durability, brightness, and long-term reliability** are prioritized. Its **laser light source, high brightness, and rugged build** make it well-suited for demanding settings like classrooms, training rooms, or outdoor projections. However, its **higher upfront cost, lack of built-in audio, and limited color flexibility** may make it less ideal for home theater or casual users.

If **cost efficiency, portability, or advanced features** (like wireless connectivity) are more important, alternative models (such as lamp-based projectors or newer laser models with additional functionalities) might be worth considering. But for **professional, long-term use where reliability and brightness are key**, the NEC K02i055.04 remains a strong recommendation.

- You need a **high-brightness, durable projector** for **business, education, or industrial use**.

- **Long-term cost savings** (due to laser longevity) are a priority.

- You require **reliable performance in well-lit or outdoor environments**.

- You can **supplement with an external sound system** if needed.

- You require **wireless connectivity** or **advanced multimedia features**.

- You are on a **tight budget** and can find a comparable lamp-based projector with similar brightness.

- You need **higher color accuracy** (e.g., for graphic design or home theater).

For most **commercial or institutional buyers**, the NEC K02i055.04 is a **solid, long-lasting investment**.

Details:

Compatible with the following model #s: LCD40 L40HV201, LCD4000-BK, RLT4000. 100% working condition. K02I055.04/128/CE40. Part Details: - NEC 40 LCD TV Inverter Board model # LCD4000.

part #: k02i05504 prices

• $11.19-$27.99

specifications tvboardgo:

• brand: Nec
• mpn: K02i055.04
• compatible brand: Nec, Samsung
• type: Inverter Board
• unit type: Unit
• compatible model: L40hv201, Lcd4000-bk, Rlt4000, Sit400wd20c01, Lcd4000, K02i055, Lcd4000-bk
• country of origin: United States

shipping tvboardgo:

• class: Economy
• carrier: USPS
• type: Calculated
• transit: 5-12 Days
• cost: $4.47
• service: USPS Media Mail

offer tvboardgo:

• options: Ship-to-home
• availability: In Stock
• quantity: 4
• started: January 31, 2026
• sold: 0

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• other
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general tvboardgo:

• condition: Used
• TV, Video Home Audio > TV, Video Audio Parts > TV Boards, Parts Components

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• # reviews: 214