Roborock ONYX3 Hall B1.0 Water Level Hall Sensor for Q Revo Docking Station
- Replacement ONYX3 Hall sensor module for Roborock Q Revo docking stations. This 3-pin float switch board detects water level and controls dock status, supporting stable operation and precise signal response in compatible cleaning stations.

The Roborock ONYX3 Hall B1.0 Hall sensor is a replacement docking station component designed for selected Roborock Q Revo series models. Used as a water level detection and dock status switching module, it helps the station monitor internal conditions accurately and maintain proper operating sequences during cleaning and maintenance cycles. This compact electronic board features a 3-pin connector and durable plastic-based construction, with a green PCB designed for precise integration inside the docking station assembly. The module works as a float-related Hall sensor, enabling reliable detection of water level changes and supporting the station’s internal control logic.
Its OEM-style replacement format makes it suitable for servicing worn, damaged, or malfunctioning original parts. In practical use, the sensor reads position and status changes within the dock system and transmits the required signal for switching functions. Accurate Hall effect sensing is essential in advanced robot vacuum stations, where water management and automated station processes depend on timely detection. The board layout and connector format are intended to match compatible Roborock Q Revo, Qrevo S, Qrevo MaxV, Qrevo Curv, Qrevo Edge, and QV35A docking stations.
By replacing a faulty Hall sensor module, you can restore correct water level monitoring and improve docking station reliability. This helps support uninterrupted operation, reduces the risk of incorrect station behavior, and extends the service life of your cleaning system. It is a practical spare part for maintenance, repair, and professional servicing of compatible Roborock dock units.





