Constant power drive, constant current output control mode; Class I and II compatible, built-in installation application. Input voltage: 200-277Vac; Protection rating: IP20; Lightning protection rating: 6KV/10KV. Compliant with Zhaga interface BOOK13 standard; Compliant with Zhaga interface BOOK24 NFC standard; DALI-2/D4i/1-10V dimming solutions available. All series support time-controlled dimming and NFC programming settings. Lifespan warning, soft start, light decay compensation; Protection functions: short circuit, overload, over-temperature, undervoltage, overvoltage protection, etc.