Xiaomi has introduced the Mijia Smart Bathroom Heater P1 Human Sensing Edition in China.
The ceiling-mounted unit integrates lighting, heating, and exhaust functions, with a 24GHz radar system that detects continuous human presence to automate operations.
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The radar replaces traditional infrared motion sensors, which often turn off when users stay still.
It can turn on lights when someone enters, run the exhaust fan while the bathroom is in use, and shut down after departure.
Detection range and sensitivity are adjustable to avoid false triggers from passersby.
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Heating is provided by a 3,000W graphene element with variable frequency control, adjusting power to maintain a set temperature.
An oscillating louver swings between 60 and 90 degrees to direct warm air downward.
Dual DC motors allow simultaneous heating and exhaust, with the fan moving about 259 cubic meters of air per hour.
The lighting panel retracts flush with the ceiling, delivering up to 1,500 lumens with adjustable color temperatures from 3,000K to 6,200K.
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A night light mode is included for late-night use.
The device integrates with the Mi Home app and HyperOS ecosystem for scheduling and voice control.
It comes with an IPX4-rated water-resistant wireless wall switch that fits a standard 86mm electrical box, eliminating the need for new wiring.
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Crowdfunding begins next week at 999 yuan ($148).
