The BC-20 HD is an advanced handheld bi-spectral UV and visible corona discharge detection camera, built for high-demand HV inspection in substations, transmission and distribution lines and HV laboratory environments. It upgrades the proven BC-20 platform with a 4K UHD visible channel (3840×2160, 4× optical + 12× digital continuous zoom), a large 5.5-inch 1080P touch screen, and an integrated communications suite — Wi-Fi, 5G, Bluetooth, GPS, temperature/humidity sensor and laser rangefinder — delivering quantitative, geo-tagged inspection data with automatic file naming and batch report generation.

• Solar-blind UV 240–280nm with out-of-band rejection — all-weather daytime operation
• Minimum UV sensitivity 2×10⁻¹⁸ W/cm², discharge sensitivity 1 Pc/10m
• 4K UHD visible channel (3840×2160) with 4× optical + 12× digital continuous zoom
• Wide-angle UV FOV 20.0°×11.2° for overall substation imaging in confined spaces
• 5.5-inch 1080P (1920×1080) touch screen, 1000 cd/cm² brightness for outdoor use
• 5 photon counting box types (Small, Medium, Big, Full Screen, Quad) for zone analysis
• UV integral gain function: ×2, ×4, ×8, ×16 plus 0–100% continuous gain
• Built-in Wi-Fi, 5G, Bluetooth — secure access to private data platforms
• GPS, temperature & humidity sensor and laser rangefinder (0.5–40m)
• Automatic file naming in time sequence, batch report output in Excel format
• Audio annotation via built-in microphone
• IP54 protection · ≥2.5 hrs battery · 64G SD storage · 1.2 kg