# HOBOT-2S vs Profi-Fensterputzroboter PR-041 V3: specs and price compared

A sourced, side-by-side comparison of the HOBOT-2S (HOBOT) and Profi-Fensterputzroboter PR-041 V3 (Sichler) among robot window cleaners.

## Side by side

| Spec | HOBOT-2S | Profi-Fensterputzroboter PR-041 V3 |
| --- | --- | --- |
| US price | $299 | not published |
| Brand | HOBOT | Sichler |
| Released | 2021 | — |
| Suction power (Pa) | — | — |
| Cleaning speed mode | ~2.4 min/m^2, 12 cm/s movement speed | 0.41 m^2/minute (12 cm/s movement speed) |
| Battery backup min | 20 | 20 |
| Spray system | Dual patented ultrasonic nozzles, 108kHz, 15um mist; 2x26ml replaceable water tanks | Ultrasonic spray function (per product name/listing; hardware is HOBOT-derived) |
| Path planning | AI smart route planning (zigzag: horizontal pass then vertical) | AI path calculation using laser and pressure sensors, adapts to surface unevenness |
| Noise level (dB) | 64 | 64 |
| Safety tether | 4.5m rope rated to 200kg (per hobot.com.tw); some third-party specs list 150kgf | 4.5m safety rope rated to 150kg |
| Edge detection | Edge-leakage sensors + auto edge detection | Laser sensor obstacle/edge detection + anti-fall algorithm |
| Weight (lb) | 2.87 | 2.65 |

## Key differences

- Cleaning speed mode: HOBOT-2S ~2.4 min/m^2, 12 cm/s movement speed vs Profi-Fensterputzroboter PR-041 V3 0.41 m^2/minute (12 cm/s movement speed)
- Spray system: HOBOT-2S Dual patented ultrasonic nozzles, 108kHz, 15um mist; 2x26ml replaceable water tanks vs Profi-Fensterputzroboter PR-041 V3 Ultrasonic spray function (per product name/listing; hardware is HOBOT-derived)
- Path planning: HOBOT-2S AI smart route planning (zigzag: horizontal pass then vertical) vs Profi-Fensterputzroboter PR-041 V3 AI path calculation using laser and pressure sensors, adapts to surface unevenness
- Safety tether: HOBOT-2S 4.5m rope rated to 200kg (per hobot.com.tw); some third-party specs list 150kgf vs Profi-Fensterputzroboter PR-041 V3 4.5m safety rope rated to 150kg
- Edge detection: HOBOT-2S Edge-leakage sensors + auto edge detection vs Profi-Fensterputzroboter PR-041 V3 Laser sensor obstacle/edge detection + anti-fall algorithm
- Weight (lb): HOBOT-2S 2.87 vs Profi-Fensterputzroboter PR-041 V3 2.65

## Sources

- HOBOT-2S: https://www.hobot.com.tw/hobot-2s/ (hobot.com.tw, 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/hobot-2s-vs-sichler-pr-041/
Cite: Per The Front Desk Review, HOBOT-2S ($299) vs Profi-Fensterputzroboter PR-041 V3 (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/robot-window-cleaners/hobot-2s-vs-sichler-pr-041/
License: CC BY 4.0.