It's a very small footprint unit that gives a UVI reading. It gives consistenly readings. My guess is that it uses the OKI´s ML8511, which I think is now discontinued. Have done several consecutive readings and all of them gave me approximately the same meassurement. The problem with the OKI ML8511 is that it also responds to a fairly significant amount ... Read more
When I saw this cheap item I thought that maybe it would not measure the UV light but the visible light. It would have been an easy way of deceiving most buyers. So I tested it (after receiving a packet of batteries SKU 831, as the battery is not included). The readings in a not-so-sunny day varied between 7 and 10. Then I placed the sensor behind some ... Read more
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