ERD-R2412NAx series
Key Features
Function
Human micro-motion detection
Detection Area
3m @FOV:120°
Frequency Band
24GHz
Output Interface
UART、IO
Size
"25×25mm； 41.8x31.8mm"
Overview
This highly integrated 24GHz mmWave radar module is designed for smart bathroom applications. Equipped with high-precision ranging, angle measurement, target tracking and micro-motion detection algorithms, it features a dedicated recognition function for male urination.With a compact 25mm package and operating current of only 18mA, it can be concealed inside smart toilets.Adopting RF sensing without cameras, it delivers precise human detection while fully safeguarding user privacy, serving as an optimal sensor for upgrading smart sanitary equipment.
Specifications
| Modulation System | FMCW (Frequency Modulated Continuous Wave) |
| Antenna | 1T2R (1 Transmit, 2 Receive) |
| Input Voltage | 4.7V - 12V |
| Power Consumption | 18±4mA @ 5V |
| Operating Temperature | -10℃ to +50℃ |
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FAQs
Why does the module keep lighting up or going off frequently?
1. Check if the output circuit of the module's O port is properly connected to a forced pull-up or pull-down;
2. Check if there is any short circuit on the three pins of the module;
3. Check if the power supply's load capacity can cover the current specified by the module.
Does it have a light-sensitive function?
All models can be equipped with the light-sensitive function, and the parameters can be adjusted.
Can it be dimmed?
The module can output PWM signals for dimming.
Why does the module not output when the device is within the reference detection range?
This series of modules are for detecting mobile signals. If the movement of the target within the detection range is very small (such as standing still/ sitting still/shaking head/using a mobile phone, etc.), it may not meet the conditions to wake up the module.
Are there any special requirements for the electrical parameters of the power supply?
1 Power supply design should follow the EMC design requirements, control the ripple size less than 150mv, as far as possible to reduce the power frequency signal (50Hz) energy amplitude (try to control below -30dBm), the input voltage to the module should strictly follow the module specification requirements.
Are there any special requirements for module installation?
1. Near the installation position of the module, avoid placing large capacitors, inductors, transformers, rectifier bridges and other components that perform voltage and current conversion. Otherwise, the generated electromagnetic radiation may affect the detection stability of the module.
2. The installation height of the module should not be lower than the height of the surrounding components. If the structure is restricted, adjust according to the actual test results.
3. The module should be installed horizontally to ensure the uniformity of the detection range.
4. The product to which the module is applied should preferably be made of non-metallic materials. If the product has metal components, adjust the application parameters of the module based on the actual test results.
Related Information
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Earda’s 60GHz Millimeter-Wave Radar Presence Sensor Deployed in Premium Smart Homes, Accurately Detects Stationary Occupancy and Micro-Movements
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Customer SupportLooking for more information about our products and solutions? Contact our team at marketing@eardatek.com
Contact Info
Lianfeng Originality Park A, JiSheng Rd. No.2, HuangGe Town, NanSha District, Guangzhou, PRC.
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