Solarmeter Model 5.7 Sensitive Total UV Meter - Measures 280-400nm with range from 0-1999 µW/cm² Total UV

The Model 5.7 UV Meter uses a semiconductor UV sensor consisting of a GaAsP photodiode chip. The Model 5.7 is completely insensitive to visible light longer than 400 nm and infrared radiation since its spectral response covers only the UV region from 260 to 400 nm. Applications include monitoring low level UV from household lighting, monitoring Xeroderma Pigmentosum UV exposure, monitoring artwork UV exposure, testing ground level UV from stadium lighting, measuring, outdoor shady area readings, and testing window film / tint transmission. To operate, press and hold push-button switch on face of unit. Aim sensor window in top panel of meter directly at UV source. Note reading on LCD and record if desired. Battery operation voltage is 9V down to 6.5V. Below 6.5V the LCD numbers will begin to dim, indicating the need for battery replacement. Under typical service load, the battery should last approximately 2 years.