Solar Light’s Model PMA2131 Digital Scotopic Light Sensor is a portable Lux detector with spectral response following the CIE Scotopic Luminous Efficiency Function (which mimics the human eye’s response in low light conditions.) The angular response of the PMA2131 sensor is cosine corrected, and suitable for measurements of diffuse radiation or radiation from extended sources. Several packages are available for different types of environments, including standard, low profile, weatherproof, and waterproof.
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Reviewed in the United States on February 4, 2026
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So glad I bought this! I need to move almost all of my reptiles lights to the inside of their cages for them to be in the correct zones, I had no idea they were not getting enough uvb before.
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