EIT 2.0™ UVKey g254 — Precision UVC Dose Measurement for Critical Disinfection Control The UVKey g254 is a purpose-built ultraviolet UVC radiometer engineered for rigorous measurement of germicidal energy at 254 nm. Designed to enable precise control of UV dose in demanding environments, the UVKey g254 delivers true, NIST-traceable UVC dosimetry for applications where measurement accuracy drives process efficacy and regulatory confidence. Core Technical Capabilities Optimized Spectral Response: Sensitive across the 245–265 nm germicidal band with superior out-of-band rejection (Optical Density >4), ensuring measurement fidelity for low-pressure mercury and germicidal UV systems. Robust Dynamic Range: Measures irradiance up to 10 mW/cm² and reports energy dosage from 0.001 mJ/cm² to 999.9 J/cm², switching between units (mJ/cm² to J/cm²) to maintain engineering clarity. Precision Accuracy & Repeatability: Delivers ±5% typical accuracy with repeatability