WMB-R is Advanced Wireless M-Bus / LoRaWAN Module for Smart Water Metering.
The WMB-R is a compact,high-performance RF module for wireless transmission of metering data over the Wireless M-Bus communication protocol or LoRaWAN standard protocol formulated by the LoRa Alliance.
WMB-R module scans the dedicated counter indicator of the water meter, using an induction system to detects and recognises its direction of rotation, which enables accurately reflect the actual reading of the water meter counter in pulse signals.
With real-time flow monitoring, instant leak detection, and automated alerts for abnormal usage, the WMB-R empowers utilities and building managers to prevent waste, optimize effciency, and reduce costs. Its ultra-compact design and tool-free replacement make maintenance effortless, while secure remote data access enables smarter, data-driven decision-making.
Simplify water management with the WMB-R
– where innovation meets conservation.
– Advanced Wireless M-Bus Module / LoRaWAN for Smart Water Metering.
Easy installation
Ultra-low power design
Remote communication
Standarded certication & Long lifeeco-design
High accuracy & Anti-interferance capability
Smart remote management & Data integration
| wM-Bus | LoRaWAN | |
| Antenna | Internal-standard structure | |
| Transmission Frequency | 868.95MHz(T1,C1) | EU863-870MHz |
| Modulation Method | FSK | LoRa |
| Tranmission Distance | >300m(in an open environment) | within gateway coverage |
| HTranmission Power | 25mW@FSK | 40mW@LoRa |
| Battery Life | 10 years* | |
| Power Supply | 3.6V A lithium battery | |
| Encryption Method | 0.1℃~509C(medium temperature),-25℃℃~55℃(working temperature) | |
| Protection Level | IP68** | |
| Types of Water Meter | SJ-SDC/SJ-SDCPLUS/MJ-SDC/PD-SDC/PD-LFC | |
| Receiver Sensitivityd | -104dBm@FSK | -123dBm@LoRa 5.5kbps |
| Firmware Upgrade | Maqnet and radio with Android app | |
| Transmission Interval | 20S/30S/1min...available @FSK | 8h/12h/24h available @LoRa |
| Weight | 70 g | |
| Alarms | Over current; leak detaction; over ow; back ow; low voltage, etc | |
| Pulse Output Value | 1L | |
*Standard conditions of use and temperature.
**|P67 protection available as an option.

Dimensional drawing of water meter
SJ-SDC Dn15:110mmx78mmx99.3mm
SJ-SDC Dn20:130mmx78mmx99.3mm
MID/OMIL
DOC
WRAS/ACS/NSF









