Light meter Unit UT383S — measurement range 0.1–200,000 lux, handheld digital illuminance meter

The Unit UT383S is a handheld digital illuminance meter designed to measure light intensity across a broad range from 0.1 to 200,000 lux. Compact and lightweight, this light meter delivers quick numeric readings suitable for indoor lighting audits, outdoor light measurements, photography exposure checks, workplace safety verification, and horticulture lighting assessment. The device combines a wide measurement span with straightforward operation to provide reliable lux data for both professionals and hobbyists.

Advantages

The Unit UT383S offers a large measurement range that covers very low to very high illuminance levels, enabling versatile use in different environments. Its handheld form factor and clear digital display make it convenient for on-site measurements, while simple controls reduce setup time and user error. The sensor provides stable readings and the meter’s design supports portability and easy storage.

Suitable for

• Indoor lighting audits and compliance checks in offices and public spaces
• Outdoor illumination measurements for street lighting and landscape lighting
• Photography and videography exposure assessment
• Workplace safety inspections and occupational lighting verification
• Horticulture and greenhouse light level monitoring

Key specifications

• Measurement range: 0.1 to 200,000 lux
• Display: digital readout for quick numeric results
• Form factor: handheld, lightweight design for portability
• Sensor type: photometric sensor calibrated for illuminance
• Operation: simple button controls for on/off and range selection

How to use

Turn on the meter and select the appropriate measurement range if manual range selection is required; otherwise use the auto-ranging function. Hold the sensor perpendicular to the light source or surface being measured for accurate results, and avoid shading the sensor with your hand. Read the lux value on the digital display once the reading stabilizes. For comparative or repeated measurements, record values at consistent positions and orientations.

Usage recommendations

Before taking critical measurements, allow the meter to acclimate to ambient temperature and perform a brief zero-check in very low light to ensure accuracy. When measuring high-intensity light, start from a higher range to avoid saturation and then switch to a lower range if needed for better resolution. Store the meter in a protective case and avoid exposure of the sensor to dust and moisture to maintain long-term performance.