Review on RCYAGO Radiation Illuminance Luminosity Measurement by Reginald Pitt

only needs to be read by holding the button down and viewing under a UVC light source. I have this for testing UVC germicidal lamps. This ON-OFF switch design was a mistake for the UVC tester. UV radiation is dangerous for skin and eyes. UV goggles can help your eyes, but this device requires you to constantly hold the off button to take measurements and read them instantly under UV light. UVC meter you should be able to turn on the UVC lamps so that the meter will record that high reading and hold that reading on its display until you turn it off. I contacted the manufacturer, they said it only works when the button is held under a UVC light source with your finger. It's a dynamic meter in the sense that the value of the counter goes down as you move away from UVC light, so you need to look under UVC light for any dangerous features when working with UVC germicidal light. I couldn't tell if the meter is accurate because it's too dangerous to check.