ERD-AT24L Series
Key Features
Function
Human Presence Detection
Detection Area
R = 5m @ 3m mounting height
Frequency Band
24GHz
Output Interface
UART、IO
Size
20.3x20.3x2.6mm
Overview
This is a human presence sensing radar module, featuring a high-performance
1T1R microstrip antenna and intelligent algorithm firmware. It achieves
a uniform sensing radius under ceiling-mounted conditions.
Specifications
| Modulation System | FMCW |
| Antenna | 1T1R |
| Input Voltage | 3.0-3.6V / 4.5-12V |
| Operating Current | 11mA @ 3.3V |
| Operating Temperature | -20℃ to 85℃ |
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FAQs
Why does the sensor become less sensitive after being installed into the final product?
Check if the spacing between the module and the product structure is equal to a half-wavelength.
Verify that the input voltage ripple of the module is less than 100mV.Ensure that the housing material does not contain metal.
Will multiple modules interfere with each other if used simultaneously?
Avoid facing the antennas directly toward each other for modules operating within the same 24GHz frequency band.
For ceiling-mount installations, maintain a distance of 3 meters between adjacent modules.
Why does the serial communication output garbled characters when first powered on?
The module requires a stable power-on period of 2 to 3 seconds before initiating communication, ensuring that internal parameter initialization completes successfully.
Is debugging this module very complicated?
Not at all. We provide a complete host computer debugging tool and open up the low-level configuration parameters, allowing users more flexibility and autonomy during debugging.
Related Information
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We are here to help you.
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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