Best Robot Window Cleaners · head-to-head

iGLASSBOT W120-T vs Profi-Fensterputzroboter PR-041 V3

A sourced, side-by-side comparison. iGLASSBOT W120-T is cheaper at —. Every spec and price links to its source.

Which is better: the iGLASSBOT W120-T or Profi-Fensterputzroboter PR-041 V3?

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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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec iGLASSBOT W120-T Profi-Fensterputzroboter PR-041 V3
US price
BrandMamibotSichler
Released2018
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).

What's the difference between the iGLASSBOT W120-T and Profi-Fensterputzroboter PR-041 V3?

Where the two actually differ on the specs we track (7 of 9). Matching specs are omitted.

  • Cleaning speed mode: iGLASSBOT W120-T ~2.5 min/m^2; autonomous Z- and N-shaped path vs Profi-Fensterputzroboter PR-041 V3 0.41 m^2/minute (12 cm/s movement speed)
  • Spray system: iGLASSBOT W120-T No onboard automated spray; wet microfiber pad, cleaning solution applied manually (included in box) vs Profi-Fensterputzroboter PR-041 V3 Ultrasonic spray function (per product name/listing; hardware is HOBOT-derived)
  • Path planning: iGLASSBOT W120-T Z/N-shaped autonomous path planning, hugs window frame edges vs Profi-Fensterputzroboter PR-041 V3 AI path calculation using laser and pressure sensors, adapts to surface unevenness
  • Noise level (dB): iGLASSBOT W120-T 65 vs Profi-Fensterputzroboter PR-041 V3 64
  • Safety tether: iGLASSBOT W120-T Safety rope included (load rating not published) vs Profi-Fensterputzroboter PR-041 V3 4.5m safety rope rated to 150kg
  • Edge detection: iGLASSBOT W120-T Anti-falling & edge detection sensors vs Profi-Fensterputzroboter PR-041 V3 Laser sensor obstacle/edge detection + anti-fall algorithm
  • Weight (lb): iGLASSBOT W120-T 2.98 vs Profi-Fensterputzroboter PR-041 V3 2.65

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