An ESP32 sensor node that lasts a year on two AAs

Supplied by the manufacturer · surveyed May 2, 2026 · Authorized by the manufacturer

• Empirical teardown analysis

What you may do with this

The original manufacturer authorized this publisher. That permission was given to them and does not transfer to you with these files; you would need your own.

The publisher states: The maker gave written permission to publish this teardown after the product was discontinued. Permission covers this write-up only, not reuse of the design.

What the methods prove

• Empirical teardown analysis

  The unit disassembled and recorded part by part.

Everything published here is the publisher’s own measurement of a legally acquired, off-the-shelf commercial unit. Qatoto does not host manufacturer-internal documents and makes no clearance assessment of its own.

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Publisher attested on May 5, 2026 that the unit was lawfully obtained, that the data was gathered by measurement and standard disassembly, and that no vendor-confidential material was used.