LS123 UV Power Meter

Special for window tint film and glass demonstation

Used for measuring the UV radiation intensity and UV rejection
Spectral range: 260-380nm (λp=365nm)

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LS123 portable UV power meter, also known as UV lamp intensity meter. This is an instrument with a wide spectrum receiving range. It is mainly used for measuring the UV rejection rate of materials. It is suitable for displaying the UV rejection performance of materials such as explosion-proof films, solar films and insulating glass. The ultraviolet power meter is also used for the measurement of radiated energy power density measurement, that is, radiant energy power per square meter, in microwatts per square centimeter (uW/cm2).


Parameter LS123 UV Power Meter
Power range 0-40000 μW / cm²
(H is the standard value)
Ultraviolet rejection rate -999%-100%
Spectral response 260nm-380nm, λp=365nm
Photosensitive aperture 10mm
Dimension 125mm * 69mm * 24.5mm (L*W*H)
Weight about 140 g (including battery)
Working temperature -20 ° C ~ + 70 ° C
Power supply AAA alkaline dry batteries
LS123 UV lamp intensity meter appearance
LS123 UV lamp intensity meter appearance


Apt for measuring various materials

The LS123 UV power meter is suitable for testing the ultraviolet rejection performance of explosion-proof films, automotive insulation films, solar films and insulating glass

Specialised in measuring UV radiation intensity

It can be used to measure the radiation intensity (ultraviolet power density) of ultraviolet light sources (sunlight, ultraviolet flashlight, etc.)

Show the UV rejection rate directly, no more data convertion

The ultraviolet power meter has a fast measurement speed which can automatically convert the ultraviolet rejection rate of the material. The rejection rate will be displayed on the interface directly for easy reading

Wide spectral response

The UV lamp intensity meter has wide spectral response which can test the ultraviolet intensity from 260nm-380nm wavelength

Operation Video


No. Description Quantity Unit
1 LS123 UV Power  Meter  1 pcs
2 AAA battery 1 pcs
3 User Manual   1 pcs
4 Certificate / warranty card  1 pcs
5 Packing box dimension 21*13*6 cm(L*W*H) 1 pcs
LS123 UV power meter package
LS123 UV power meter package


  1. 1. Can LS123 measure UVA curing lamps?

    LS123 UV power meter is mainly used to test the radiation intensity of UV light sources such as sunlight and low-intensity flashlights.

    It can't be used to measure UV lamps in professional industries such as UV curing, sterilization, PCB exposure, etc. The range, accuracy and spectral response range of the instrument are not suitable.

  2. 2. The difference between LS123 UV power meter and window film transmission meter

    LS123 UV power meter can test the power (irradiation intensity) of UV rays, as well as the UV rejection rate of solar film, glass and other materials.

    The UV response band of LS123 is 260-400nm and the peak value is 365nnm. The UV rejection rate calculated by the LS123 UV power meter is the UV rejection rate in this response wavelength range; while the window film transmission meter tests the UV rejection rate at 365nm, so the test data of the two instruments are different. The difference is related to the sensitivity of window film transmittance to wavelength changes.



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