The Extech LT40 LED Light Meter is a compact, professional handheld light meter designed to measure and optimise environmental light levels in Lux and Foot-Candle units.
Designed specifically for white LED lighting as well as standard light sources, the Extech LT40 is a practical tool for lighting checks, workplace compliance, building inspections, facilities maintenance, and general illumination testing.
The Extech LT40 is ideal for professional use in:
- Office buildings
- Manufacturing plants
- Warehouses
- University campuses
- Schools
- Hospitals
- Commercial buildings
- Retail environments
- Facility maintenance
- Lighting audits
- Workplace safety checks
- Public safety and compliance inspections
The Extech LT40 measures the intensity of light that strikes the built-in sensor, allowing users to verify whether a space has suitable illumination for its intended use.
This makes it useful for checking:
- Workplace lighting levels
- Office lighting
- Warehouse lighting
- Factory lighting
- Classroom lighting
- Hospital lighting
- Retail display lighting
- Corridor and stairway lighting
- Safety lighting
- General indoor illumination
As LED lighting becomes more common in commercial, industrial, and public environments, accurate light measurement is increasingly important.
The LT40 is designed for white LED light measurement and can also measure standard light sources such as fluorescent, metal halide, high pressure sodium, and incandescent lighting.
This makes it suitable for modern lighting installations as well as mixed lighting environments where different light sources may be used in the same building or facility.
The meter measures light in both Lux and Foot-Candle units, giving users flexibility depending on the measurement standard or reporting requirement being used.
Lux is commonly used internationally, while Foot-Candles may be required for certain standards, specifications, or workplace lighting references.
The Extech LT40 offers a wide measuring range of up to 400,000 Lux and 40,000 Foot-Candles.
This allows users to measure a broad range of lighting conditions, from lower indoor illumination levels to brighter commercial, industrial, and high-output lighting environments.
The meter provides 3% basic accuracy for both Lux and Foot-Candle measurement, helping users record reliable readings for lighting checks, audits, and maintenance documentation.
The Extech LT40 is especially useful for monitoring and optimising environmental light levels.
It can help users confirm whether lighting is sufficient for productivity, safety, visibility, comfort, and compliance requirements.
This is useful in environments where poor lighting can affect:
- Worker safety
- Productivity
- Visual comfort
- Inspection accuracy
- Public safety
- Security visibility
- Customer experience
- Operational efficiency
- Compliance with lighting standards
The built-in sensor makes the LT40 simple and convenient to use.
Users can remove the protective sensor cover, position the meter in the area being tested, and take a light reading directly from the display.
The integrated sensor design helps keep the meter compact and easy to carry, while the protective cover helps safeguard the sensor when the meter is not in use.
The Extech LT40 is compact enough to carry in a tool bag, service kit, or pocket, making it practical for daily inspections and on-site lighting checks.
It is powered by 2 x AAA batteries, making it easy to keep ready for field use.
The meter comes supplied with a storage pouch, helping protect the unit during transport and storage.
For building managers, health and safety teams, lighting contractors, inspectors, and maintenance professionals, the Extech LT40 provides a simple and reliable way to measure lighting levels and support better lighting decisions.
Key Features:
- Compact LED light meter
- Measures white LED lighting
- Measures standard light sources
- Measures Lux and Foot-Candle units
- Lux measurement ranges: 999.9, 9999, 99990, and 400000 Lux
- Foot-Candle measurement ranges: 99.99, 999.9, 9999, and 40000 Fc
- Basic accuracy of 3% for Lux measurement
- Basic accuracy of 3% for Foot-Candle measurement
- Built-in light sensor
- Protective sensor cover
- Suitable for fluorescent lighting
- Suitable for metal halide lighting
- Suitable for high pressure sodium lighting
- Suitable for incandescent lighting
- Useful for workplace lighting checks
- Useful for environmental light level optimisation
- Compact handheld design
- Powered by 2 x AAA batteries
- CE certified
- 2-year warranty
- Dimensions: 133 x 48 x 23 mm
- Weight: approximately 250 g
Applications:
- Lux measurement
- Foot-Candle measurement
- White LED light testing
- Standard light source testing
- Workplace lighting checks
- Office lighting inspections
- Warehouse lighting checks
- Manufacturing plant lighting checks
- School and campus lighting inspections
- Hospital lighting checks
- Retail lighting evaluation
- Facility maintenance
- Lighting audits
- Building inspections
- Public safety lighting checks
- Compliance support
- Lighting optimisation
- General illumination testing
What's in the Box:
- Extech LT40 LED Light Meter
- Built-in sensor with protective cover
- 2 x AAA batteries
- Storage pouch
- User manual
The Extech LT40 LED Light Meter is designed for professionals who need a simple, reliable, and portable tool for measuring white LED and standard lighting levels.
With Lux and Foot-Candle measurement, a wide range of up to 400,000 Lux / 40,000 Fc, 3% basic accuracy, built-in sensor, protective cover, and compact handheld design, the Extech LT40 helps users measure, verify, and optimise lighting conditions with confidence.
DISCLAIMER:
These commodities, technology or software may not be used in the design, development, production or use of nuclear, chemical or biological weapons or missiles. These commodities may not be sold, transferred or exported to the territory of Belarus, Burundi, Central African Republic, Crimea Region of Ukraine, Cuba, the Democratic Republic of Congo, the Republic of Congo, Donetsk Region of Ukraine, Guinea-Bissau, Iran, Luhansk Region of Ukraine, North Korea, Russia, Rwanda, the Republic of South Sudan, the Republic of Sudan, Somalia, Syria, Tanzania, Uganda, Zambia and Zimbabwe.
What's in the box
1 x Extech LT40 LED Light Meter
1 x Built-in sensor with protective cover
2 x AAA batteries
1 x Storage pouch
1 x User manual
