# iGLASSBOT W120-T vs Profi-Fensterputzroboter PR-041 V3: specs and price compared

A sourced, side-by-side comparison of the iGLASSBOT W120-T (Mamibot) and Profi-Fensterputzroboter PR-041 V3 (Sichler) among robot window cleaners.

## Side by side

| Spec | iGLASSBOT W120-T | Profi-Fensterputzroboter PR-041 V3 |
| --- | --- | --- |
| US price | not published | not published |
| 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 |

## Key differences

- 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

## Sources

- iGLASSBOT W120-T: https://cleanup.expert/mamibot-w120t/ (cleanup.expert, verified 2026-08-01)
- Profi-Fensterputzroboter PR-041 V3: https://www.pearl.de/a-REF39093-3031.shtml (pearl.de, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/robot-window-cleaners/mamibot-w120-t-vs-sichler-pr-041/
Cite: Per The Front Desk Review, iGLASSBOT W120-T (not published) vs Profi-Fensterputzroboter PR-041 V3 (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/robot-window-cleaners/mamibot-w120-t-vs-sichler-pr-041/
License: CC BY 4.0.