The FN104T dew point meter utilizes an imported thin-film capacitive humidity sensor, combined with single-chip microcomputer control technology, offering high measurement accuracy and ease of use.

The instrument features a 320×480-dot TFT display that simultaneously displays dew point temperature, volume ratio, and absolute humidity. When unattended, it can periodically record dew point values and store at least three months of continuous data. The touchscreen menu is user-friendly and user-friendly, with a fully Chinese menu. It operates with a 220V AC charger, AC power supply, and DC battery power, providing approximately 8–12 hours of continuous operation on a full charge.