Mamibot
iGLASSBOT W120-T
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Released 2018
Best Robot Window Cleaners · head-to-head
A sourced, side-by-side comparison. iGLASSBOT W120-T is cheaper at —. Every spec and price links to its source.
Mamibot
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Released 2018
Sichler
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The Profi-Fensterputzroboter PR-041 V3 wins 1 of the 1 specs we compare head to head; the other wins 0.
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✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | | Profi-Fensterputzroboter PR-041 V3 |
|---|---|---|
| US price | — | — |
| Brand | Mamibot | Sichler |
| Released | 2018 | — |
| Suction power (Pa) | — | — |
| Cleaning speed mode | ~2.5 min/m^2; autonomous Z- and N-shaped path | 0.41 m^2/minute (12 cm/s movement speed) |
| Battery backup min | 20 | 20 |
| Spray system | No onboard automated spray; wet microfiber pad, cleaning solution applied manually (included in box) | Ultrasonic spray function (per product name/listing; hardware is HOBOT-derived) |
| Path planning | Z/N-shaped autonomous path planning, hugs window frame edges | AI path calculation using laser and pressure sensors, adapts to surface unevenness |
| Noise level (dB) | 65 | 64 |
| Safety tether | Safety rope included (load rating not published) | 4.5m safety rope rated to 150kg |
| Edge detection | Anti-falling & edge detection sensors | Laser sensor obstacle/edge detection + anti-fall algorithm |
| Weight (lb) | 2.98 | 2.65 |
Sources — iGLASSBOT W120-T: cleanup.expert (verified 2026-08-01). Profi-Fensterputzroboter PR-041 V3: pearl.de (verified 2026-08-01).
Where the two actually differ on the specs we track (7 of 9). Matching specs are omitted.