Mijia Mist Free Humidifier 3 [400] 99% Antimicrobial Rate 4L Water Tank Smart Screen Air Humidifier Work with Mi Home APP

Mijia Mist-Free Humidifier 3 (400) uses natural evaporation rather than an ultrasonic mist. Water is drawn through the humidifying system and released into the room as invisible moisture, which avoids the visible plume and mineral 'white dust' associated with many ultrasonic designs. The 400 version is rated for 400 mL/h humidification and uses a 4-litre tank.

The tank is sized for extended everyday operation, while a screen on the unit provides local status without needing a phone. Sleep-oriented operation is designed to keep noise low; available documentation quotes about 32 dB(A) in sleep mode. The humidifier is rated at only 9 W, reflecting the lower-power evaporative approach.

Wi-Fi connectivity lets the unit join Mi Home / Xiaomi Home for remote settings and automations. This model is primarily a Mainland China product, and pairing commonly requires the China region in the app. Once added, it can be incorporated into routines with other Xiaomi ecosystem devices, such as humidity sensors.

Evaporative humidifiers need routine cleaning because minerals remain in the water path rather than being dispersed into the air. The filter and tank should be kept clean, especially in hard-water areas. Exact antimicrobial performance depends on the tested configuration and maintenance, so the catalog emphasises the confirmed model CJSJSQ02XY, capacity, output and power rather than repeating a broad marketing percentage.