- Changes
- 1
- Tracking since
- Mar 2024
- Latest
- Mar 1, 2024
- Net movement
- Classification stable
- 2024
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W120-T edge-detection false stops documented across Amazon owner reviews
Aggregated Amazon owner reviews from 2023-2024 document a consistent edge-detection false-stop pattern on the W120-T: the sensor halts drive motors before the actual window edge, leaving a strip of uncleaned glass that requires manual completion via remote.
Full assessment
AutonomyL2 unchangedReadinessPromising progress strengthenedScoreReliability -5No firmware update addressing this behavior has been documented by Mamibot. The pattern is now a documented classification constraint, not an isolated complaint, and warrants monitoring for any manufacturer acknowledgment or field correction.
Impact on autonomy
- Edge-detection false stops leave uncleaned strips requiring owner remote intervention.
- Auto-path reliability on flat glass is confirmed but coverage completeness is not guaranteed.
- No software correction to the false-stop pattern has been documented.
Impact on readiness
- Owners must budget additional cleaning passes on panel edges each session.
- Manual remote-control completion step adds friction to the claimed automated routine.
- No manufacturer communication addressing the pattern has been issued.
Claim check3 claims reviewed
Intelligent auto-path covers the full window surfaceEdge-detection sensor halts before the actual frame in a documented subset of owner sessions; strips at window edges require manual remote completion (Amazon owner reviews, 2023-2024)Edge detection prevents damage to window framesSensor does prevent frame contact; the trade-off is early halting that leaves uncleaned glass near edges (owner reports consistent across multiple reviewers)Minimal owner intervention required during cleaning cycleRemote intervention documented as a recurring step on panel-edge strips; the cleaning cycle is not unattended on affected windows (aggregated Amazon reviews)Bottom lineThe edge-detection sensor functions as a safety mechanism but calibrates conservatively, producing a repeatable uncleaned margin that manual use of the RF remote is required to address.
Technical notes3 sections
- Observed Failure Pattern
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Owner reports across 2023-2024 on Amazon describe the W120-T edge-detection sensor halting the drive motors at a point several centimeters short of the actual window edge or frame. The sensor appears calibrated to stop early as a safety margin against frame contact, but the margin is wide enough to leave a visible uncleaned strip. The behavior is consistent across multiple independent owner accounts and is not attributed to a single batch or production run.
- User Workaround
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Owners report completing the missed edge strip via the RF remote’s manual-drive mode after the auto-path cycle concludes. This requires the owner to remain present and engaged at the end of each horizontal pass. The workaround is functional but contradicts the product’s marketed autonomous completion claim.
- Manufacturer Response
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No public statement from Mamibot addressing the false-stop pattern has been located. No firmware changelog entry referencing edge-detection calibration changes has been documented. The W120-T uses an RF-remote control system with no companion app; over-the-air updates are not part of the documented platform architecture, making field correction of sensor calibration unclear.