This UVA B Meter is designed to test the UVA B irradiance of the UV lamp which used for the UV Aging,Reptile Lamps,Acrylic Shield Transmission or Eyewear UV block comparison.The instrument have a LCD which can display the value of the UVA B irradiance the UVB lamp.Model:RGM-UVA BIrrad. Range:0-1999 µW/cm² UVA+BPeak Spectral Response:λp=370 nmResolution:1 µW/cm²Conv. Rate:3.0 Readings/SecDisplay:3.5 Digit LCDDigit Size:0.4 inch highOper. Temp:32° F TO 90° FOper. Humid.:5% TO 80% RHAccuracy:±10% REF.NISTPower Source:2x1.5-Volt DC Battery(Does not contain)Lens:UV GlassSensor :Silicon Carbide (SIC) Photodiode packaged in hermetically sealed UV glass window cap. Interference filter coating (Metal Oxide) blocks most UVA B from response.size: 165 x 75mmMaterial:plasticcolour:bluePackage Contents:1 x UVA B Meter(Without shell)1 x English manualOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.