Xiaomi is taking aim at a familiar bathroom annoyance: a heater or light switching off while someone stands still under the shower. Its Mijia Smart Bathroom Heater P1 Human Sensing Edition is built to keep detecting a person even when there is no obvious movement.
The key feature is a 24GHz millimetre-wave radar system that can detect breathing and tiny body vibrations. That allows the unit to identify human presence beyond the large movements required by many conventional motion sensors.
A response to the limits of PIR sensors
Passive infrared, or PIR, sensors commonly respond to movement rather than the continued presence of a still person. In a bathroom, that can mean a user must move simply to prevent the heater or lighting from turning off.
The 24GHz radar is intended to avoid that interruption by monitoring micro-movements associated with the human body. Gadget.viva.co.id reported that Xiaomi also provides adjustable detection range and sensitivity settings.
Those controls are designed to reduce false triggers, including cases where a person walks past the bathroom door without entering the room. The system can therefore be tailored to the layout and detection needs of the installation area.
| Feature | Details |
|---|---|
| Presence sensing | 24GHz radar that detects breathing and micro-vibrations |
| Heating element | 3,000W graphene heater with variable-frequency control |
| Air distribution | Oscillating louvre with a 60–90-degree swing range |
| Integrated functions | Heater, exhaust fan, main light, and night light |
More than a ceiling heater
The Mijia Smart Bathroom Heater P1 combines heating, ventilation, and lighting in one unit. It uses two separate DC motors, allowing the heating and exhaust functions to operate at the same time.
That arrangement is intended to reduce steam in the bathroom without sacrificing warmth. It also makes the product a combined fixture rather than a standalone heater with a single purpose.
The heating side uses a 3,000W graphene element. Xiaomi says the material supports rapid heating, more even heat distribution, and durability.
Variable-frequency control is used to maintain a target temperature by adjusting output. Instead of simply running at full power and then shutting off, the system is designed to regulate heat according to the selected setting.
An oscillating louvre moves through a 60- to 90-degree range and directs warm air downward. This is intended to prevent heat from remaining concentrated near the ceiling and to bring warmth closer to the floor area.
Lighting and connected-home controls
The unit includes a main light rated at up to 1,500 lumens, with colour temperature adjustment from 3,000K to 6,200K. A separate night-light mode is included for use when brighter lighting would be unnecessary.
Xiaomi supplies an IPX4 wireless wall switch designed for standard 86mm electrical boxes. The company says this can simplify installation by avoiding the need for new wiring or wall reconstruction.
The light panel can also be pulled out for cleaning and maintenance. Through the Mi Home app and HyperOS, users can create automatic schedules, use Xiaomi voice assistant controls, and connect the unit with devices such as door sensors, cameras, and air conditioners.
Xiaomi has priced the Mijia Smart Bathroom Heater P1 at 999 yuan, with crowdfunding in China scheduled to begin next week. The product is currently aimed at the Chinese market, and global availability has not been specified.