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STHS34PF80 Presence and motion sensor

Ashwin_versa
Associate

‎2025-08-24 10:13 PM - last edited on ‎2025-09-09 4:54 AM by

 Hello,

        In my case, the STHS34PF80 sensor module is powered using I2C communication with the ESP32 module, and I have tested its functionality only up to 2 feet; beyond that, it fails to detect any presence. However, the datasheet indicates that it should cover 4 meters without a lens in an 80-degree field of view. What might be the reasons for this discrepancy?

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Federica Bossi
ST Employee

‎2025-08-29 6:16 AM

Hi @Ashwin_versa ,

For the configuration of the sensor and of the presence detection algorithm, we suggest to follow the procedure described in the AN5867.

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