LS125 UV Light Meter +UVALED-X1 Probe

Suitable for UVA LED point light source

Small aperture with a light hole diameter of 1mm
Record energy and intensity value at the same time
Spectral response: 340nm-420nm, calibrated with 395nm LED
Power measuring range: 0-20000mW/cm²

Request and Quote Buy Now User Manual

The LS125 UV light meter is a smart host that can support 9 different types of probes. Its main function is data display. The UVALED-X1 probe is one of the 9 probes equipped with the LS125 host. The probe's spectral response range is 340nm-420nm, calibrated at 395nm. The light hole diameter is 1mm, which is suitable for the intensity and energy detection of LED point light sources.

If you want to know about other types of probes supported by the LS125 UV light meter host, please click "LS125 Multi-Probe UV light meter Host" for details.


Parameters UVALED-X1 Probe
Spectral response 340nm-420nm, calibrated with 395nm UV LED
Power measuring range 0 - 20000mW / cm²
Resolution 1mW / cm²
Energy measuring range 0-9999999mJ/ cm²
Record time 0-99999s
Measuring accuracy(H is the standard value) H<50mW/cm²:±5mW/cm²
Sampling speed 2048 times/second
Unit mW / cm² (default), W / cm², W / m²
Test Hole Diameter Φ=1mm
Probe size 39mm × 32mm × 15mm(L*W*H)
Packing box dimension 24 * 6 * 5 cm (L * W * H)


1mm aperture, designed for point light sources

1mm ultra-small test aperture, suitable for 340nm-420nm LED point light source intensity and energy test

Wide spectral response

The probe features wide spectral response, and it is suitable for 365nm / 375nm / 385nm / 395nm / 405nm LED point light source intensity and energy measurement in various wavelength bands

UV LED light source power and energy are measured simultaneously

The UV radiometer can measure energy value and power value at the same time. It also has a wealth of statistical functions, intelligent statistics of real-time power value, maximum value, minimum value, average value, measurement time, energy value

2048 times/sec high-speed acquisition

High-speed acquisition, which can collect 2048 data per second, makes the measurement results more accurate

Three units are available

Three measurement units can be switched, namely mW/cm², W/cm², W/m². Data conversion between different units does not require manual calculation

Advanced digital probe technology

Using advanced digital probe technology, all data acquisition and processing is done inside the probe, and transmission through a more interference-resistant digital signal ensures more stable test data


Patent Certificate for LS125 UV radiometer
Patent Certificate for LS125 UV radiometer

Operation Video


  1. 1. The difference between UVALED-X0, UVALED-X1 and UVALED-X3 UV probe for LS125 UV light meter host

    1) The test aperture of the UVALED-X0 probe is 10mm, which is mainly used to detect UVA LED plane light sources in curing and exposure industries;

    2) The test aperture of the UVALED-X1 probe is 1mm, which is mainly used to detect UVA LED point light sources in curing and exposure industries;

    3) The UVALED-X3 probe is mainly used for the detection of low-power UVA LED light sources, such as nail art lamps.

  2. 2. What's the working temperature of the UV probes?

    The 9 probes of the LS125 UV light meter are not heat-resistant. The probe can be used for a long time at 80℃ or lower. If the temperature is higher than 80℃, it is recommended to use UV energy meter for UVA light source detection.

  3. 3. Which probe is recommended if I need to measure both mercury lamp and LED light source?

    It is recommended to use the LS125 UV light meter host and UVA-X0, UVALED-X0 probes.

  4. 4. Whether a traceable calibration certificate is included?

    UVA-X0 and UVA-X1 are mainly used to detect 365nm high-pressure mercury lamps, which can be ensured to pass the inspection of the Metrology Institute and obtain a calibration certificate (approved by CNAS and ilac-MRA). The cost of the calibration certificate is about US$200 ; but the UVALED-X0, UVALED-X1 and UVALED-X3 probes are professionally used to detect UVA LED light sources. There is no unified inspection standard for LED light sources, each light source and UV energy meter manufacturer has their own calibration standards. We can provide the factory calibration reports for these three probes special for UV LED, but no calibration certificates can be provided.