Kamstrup MULTICAL® 21 Ultrasonic Smart Water Meter

The Kamstrup MULTICAL® 21 Ultrasonic Smart Water Meter (DN12 / DN15) is a high-accuracy smart water metering solution designed for residential and light commercial applications. Using advanced ultrasonic measurement technology with no moving parts, it ensures long service life, precise low-flow detection, and minimal maintenance.

The meter supports wM-Bus and Sigfox communication, enabling flexible remote meter reading options.

wM-Bus (Wireless M-Bus)

How it works:

wM-Bus is a short-range wireless radio communication technology used to read meters locally or through a nearby gateway. Data is transmitted at regular intervals and collected by handheld readers, fixed receivers, or building-level concentrators.

Best suited for:

• Apartment blocks and complexes
• Gated estates and body corporate properties
• On-site meter reading and building networks
• Areas with reliable local infrastructure

Sigfox (LPWAN – Long Range)

How it works:

Sigfox is a long-range, low-power wide-area network (LPWAN) that sends small data packets directly to the cloud via national base stations. The meter communicates independently, without the need for on-site gateways.

Best suited for:

• Remote or widely distributed properties
• Municipal and utility projects
• Landlord portfolios across multiple locations
• Areas where on-site data collection is impractical