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Smart Bathroom Radar Sensing Solution

This solution integrates our proprietary 24 GHz FMCW radar module in a camera-free design for enhanced privacy protection. It supports centimeter-level multi-dimensional human presence detection with low power consumption, compact form factor, and strong interference rejection. Compatible with smart toilets, smart mirror cabinets, and various other bathroom fixtures, it delivers a seamless, touchless intelligent interaction experience.

Multi-dimensional Data Output

With centimeter-level ranging resolution and a maximum detection distance of 3 meters, the module outputs real-time multi-dimensional data including distance, angle, and motion direction of the human body, meeting the precision interaction requirements of bathroom environments.

Low Power Consumption

Utilizing FMCW modulation with intelligent sleep scheduling, the average power consumption drops to as low as 18 mA, outperforming comparable radar module solutions.

Superior Anti-interference Capability

Multiple data processing algorithms effectively suppress power supply ripple interference and environmental clutter, maintaining stable detection performance even in the highly variable bathroom environment.

Compact Form Factor

The module measures only 25 × 25 mm and can be easily embedded into toilet lid panels, mirror cabinet backplates, bathroom heater control panels, and other confined spaces, without compromising the product's industrial design.

Privacy Protection

Pure RF-based sensing with no camera and no image capture, fundamentally eliminating user privacy concerns.

Strong Penetration

24 GHz millimeter-wave signals can penetrate plastic, ceramic, glass, and other non-metallic materials. The module can be installed inside the device enclosure, preserving the product’s aesthetic integrity.

Excellent Interference Rejection

FMCW modulation combined with our proprietary filtering algorithms effectively suppresses bathroom-specific environmental interference such as water vapor, steam, and temperature fluctuations, resulting in an extremely low false-trigger rate.

Cost-effective

A single-module solution requiring no additional computing chips or cloud services, with a low barrier to mass production deployment.

Smart Toilet — Hands-free Automatic Lid Opening

Embedding the radar module into the toilet lid enables real-time detection of human approach and departure within a 3-meter range. The lid opens automatically as the user approaches and closes with a flush after the user leaves, delivering a truly “zero-contact” restroom experience. Unlike conventional PIR infrared solutions, radar is unaffected by ambient light, can penetrate non-metallic enclosures, and has a significantly lower false-trigger rate.

Smart Mirror Cabinet — Motion-Activated Lighting

Through ranging and angle-of-arrival capabilities, the radar tracks the user’s position and orientation in front of the mirror in real time. The vanity lights turn on automatically when the user approaches and switch off after a delay once the user leaves. Brightness can be adjusted based on distance, achieving an adaptive “light-follows-you” effect.

Male Urination Detection — Urine Stream Recognition & Smart Linkage

The radar module is installed inside the toilet bowl. Leveraging the high-sensitivity micro-motion detection capability of 24 GHz millimeter-wave signals, it captures the fluctuation signatures generated by the urine stream in real time. Once the system recognizes the urination pattern, it automatically triggers the corresponding actions: activating the foam shield to cover the water surface, effectively blocking odors and splash; after use, it initiates a half-flush cycle for water efficiency. The entire process is completely touchless — no buttons or remote controls needed — making the restroom experience smarter, more hygienic, and more water-efficient.

Comprehensive energy saving rate after transformation

70%

Investment Recovery Cycle（Months）

8~20

Autonomous Learning, Intelligent Networking, Automatic Generation of Electronic Maps

Access 2G, 3G, 4G LTE, 5G, and CAT-M today, and upgrade as new network technologies become available.

FAQs

Can the radar module penetrate the ceramic or plastic enclosure of a smart toilet?

Yes. The 24 GHz millimeter-wave has excellent non-metallic penetration capability and can pass through plastic, ceramic, glass, and other common bathroom materials. The enclosure must be free of metallic components and electromagnetic shielding coatings, with adequate installation clearance provided.

Will water vapor and steam in the bathroom affect radar detection accuracy?

No. The module uses FMCW modulation with multiple data processing algorithms that effectively distinguish human targets from environmental interference. Water vapor and steam cause negligible attenuation at the 24 GHz frequency band and will not affect normal module operation.

Does this solution support micro-motion detection? What specific movements can it recognize?

Yes. At close range, the module can detect subtle body movements such as swaying, raising a hand, and turning around.