The DJI H30T Infrared Density Filter extends the Zenmuse H30T thermal camera's measurement range to -20°C to 450°C (high gain) or 0°C to 1600°C (low gain) by attenuating light intensity for high-temperature scenarios. Weighing 10 g and including a protective case, it installs via quick-start guide without affecting functionality despite potential minor scratches from repeated use.