Wireless M-Bus and Bluetooth metering sensors built on the WF8002 inductive sensing chip, for smart water and gas meters that need to report consumption without a wired bus. The same sensing front end is used across the range, so a meter design can move between radio options without changing its metrology.
The WMBus variant transmits EN 13757 / OMS compatible data at 868 MHz, the band used by European utility reading networks. It suits walk-by, drive-by and fixed-network collection.
A Bluetooth variant is available for applications that need a short-range local link instead of a fixed radio network, for example on-site reading during installation or service.
The sensor counts the rotation of the meter’s metal pointer with a PCB coil pair, so there is no magnet and no reed contact. Readings are unaffected by an external magnet, forward and reverse running are both detected, and the module reports an alarm if the metal target is removed.
| Radio | Wireless M-Bus, 868 MHz, EN 13757 / OMS compatible |
| Local link | Bluetooth variant |
| Sensing | Non-magnetic inductive, forward and reverse running |
| Power | Ultra-low consumption for battery-powered meters |
| Interference | Resistant to magnetic and electromagnetic interference |
