Review on 🌞 SunKnown Portable UV Intensity Meter - Handheld Sunlight Meter for Measuring Harmful UV Solar Radiation - Digital UV Index Sensor & Sunlight Strength Tester by Carl Henderson

I only gave this unit 3 stars because:1 It's a little awkward to set the date, time and alarm.2 You can't turn off the unit when it's off. Fatal error. You must remove the batteries, then all settings will be lost. But it measures ultraviolet rays. Today the UV index here is 10. No clouds. I have a 9.5 meter, but you have to steer carefully. 0.5 I give up.