The Ultrasonic Residential Water Meter (RWM) is a battery-operated, high-accuracy meter designed for drinking water measurement in residential complexes. Using the Transit-Time Differential Measurement Principle, it provides reliable flow measurement with no moving parts, ensuring long life, zero maintenance, and compliance with OIML R49, ISO 4064, IP68, and drinking water approvals.

In multi-apartment / tenants buildings, water consumption varies significantly across individual homes. Utilities and society management often face billing disputes, manual reading difficulties, and no transparency in consumption. Independent meters are needed in each apartment, but there must be a central system that collects all data and makes it available for management. A wired communication network ensures reliable data transmission over communication RS485, even where wireless signals are weak.

SBEM provides a SUB-Metering solution using RS485 communication, where RWMs installed in each flat are connected through wired network to a central RTU (Remote Terminal Unit). The RTU collects consumption data from all meters and then transmits it via wireless communication to the cloud server. All readings, alarms, and analytics are available on SenSphere Web App, enabling accurate billing, consumption tracking, and efficient system
management.