Extech LT40 LED Light Meter
The Extech LT40 is a compact and reliable light meter made for fast and accurate light measurement in the workplace. This easy-to-use lux meter helps you check lighting levels in offices, schools, factories, hospitals, and other indoor environments where safe and consistent lighting matters.
Designed for professional use, the LT40 measures both standard and LED lighting sources with dependable accuracy. Whether you need a light meter for routine checks or a lux meter for workplace surveys, this model gives you clear readings you can trust.
Simple and Accurate Light Measurement
The Extech LT40 is a practical light meter for measuring brightness in both lux and foot-candles. This versatile lux meter is suitable for a wide range of tasks, from checking office lighting to assessing light levels in industrial spaces. Because this unit can measure very low and very high light levels, it is a useful light meter for many different environments.
If you need a lux meter for LED lighting, fluorescent lamps, incandescent bulbs, or other common light sources, the Extech LT40 is a strong choice. This light meter is designed to make light testing simple, helping users get quick and accurate results without confusion.
Easy to Use and Portable Design
The Extech LT40 is a lightweight light meter that is easy to carry and simple to operate. Its handheld design makes this lux meter ideal for site visits, inspections, and regular workplace checks. With a built-in sensor and protective cover, the Extech LT40 is ready for daily use in busy environments.
Because it is compact and portable, this light meter is easy to move from one area to another. If you need a lux meter for fast checks across multiple rooms or work zones, the Extech LT40 offers a simple and efficient solution.
Reliable Performance for Daily Use
Lighting plays an important role in safety, comfort, and productivity. The Extech LT40 is a dependable light meter that helps users maintain suitable lighting levels in professional settings. This lux meter can support workplace safety checks, lighting audits, and routine maintenance tasks.
The Extech LT40 is also a useful light meter for identifying lighting problems such as dim work areas or uneven brightness. By using a lux meter like the Extech LT40, businesses can improve visibility, support staff wellbeing, and help maintain suitable lighting standards.
Why Choose the Extech LT40?
The Extech LT40 combines accuracy, portability, and ease of use in one practical light meter. Whether you need a lux meter for compliance checks, facility management, or general lighting assessment, this model is built to deliver dependable results.
For professionals who need a straightforward light meter for everyday use, the Extech LT40 is a smart option. With its reliable performance and user-friendly design, this lux meter is well suited to a wide range of lighting applications.
Extech LT40 LED Light Meter – Technical Specifications
| Features | |
| Measurement Range (Lux) | 999.9, 9999, 99990, 400000 lux |
| Measurement Range (Foot-Candle) | 99.99, 999.9, 9999, 40000 Fc |
| Accuracy | ±3% |
| Light Sources Measured | LED, fluorescent, metal halide, sodium, incandescent |
| Display | 4000 count LCD |
| Data Functions | Data hold, Max/Min |
| Sensor Type | Built-in light sensor with protective cover |
| Power Supply | 2 × AAA batteries |
| Dimensions | 133 × 48 × 23 mm |
| Weight | 250 g |
| Certifications | CE |
| Warranty | 2 years |
❓ Frequently Asked Questions (FAQ)
Q1: What is the Extech LT40 used for?
A. The Extech LT40 is a light meter used to measure brightness levels in indoor and outdoor environments.
Q2: What does a light meter measure?
A. A light meter measures illumination in lux or foot-candles, helping you understand how bright an area is.
Q3: Can the Extech LT40 measure LED lighting?
A. Yes, the Extech LT40 LED Light Meter is designed to measure LED and standard light sources accurately using its built-in lux meter.
Q4: Is the Extech LT40 suitable for workplace use?
A. Yes, it is widely used in workplaces to check lighting levels and support safety compliance.
Q5: Is the Extech LT40 suitable for emergency lighting testing?
A. Yes, the Extech LT40 can be used for basic emergency lighting checks by measuring low light levels during audits.
Q6: Can the LT40 measure coloured LED sources like red or blue?
A. Yes, but accuracy may be lower with coloured LEDs. For more precise coloured LED measurement, the Extech LT45 is a better choice.
Q7: Does the LT40 account for different light angles?
A. Yes, the Extech LT40 includes cosine correction to help provide more accurate readings when light reaches the sensor from different angles.
How Light Meters Are Used in Industry
A light meter is an important tool used to measure brightness levels in different environments. A lux meter helps ensure lighting is suitable for safety, productivity, and comfort. The Extech LT40 is commonly used as a reliable light meter for workplace lighting checks.
Workplace Safety and Compliance
In many workplaces, lighting must meet safety standards. A light meter helps measure whether lighting is sufficient. The Extech LT40 lux meter allows safety teams to check light levels and ensure safe working conditions.
Offices and Commercial Buildings
Lighting affects comfort and productivity in offices. A light meter like the Extech LT40 helps ensure lighting is not too dim or too bright. This lux meter helps create a comfortable working environment.
Industrial and Manufacturing Environments
Factories often have uneven lighting. A light meter helps identify areas that need improvement. The Extech LT40 lux meter supports better visibility and safer working conditions.
Energy Efficiency and Optimisation
A light meter can also help reduce energy use. By using a lux meter like the Extech LT40, businesses can avoid over-lighting and improve efficiency.
Final Thoughts
The Extech LT40 is a reliable and easy-to-use light meter for measuring lighting conditions. This lux meter helps improve safety, comfort, and efficiency in many environments. The Extech LT40 is a practical tool for anyone who needs accurate light measurement.