German firm Würth Elektronik has introduced a small, cost-optimised radio module for transmitting meter readings in accordance with the wireless M-Bus standard EN 13757-4.

It can be used both as a transmitter for a meter as well as a receiver for a gateway or data collector. Metis-e is based on the Texas Instruments SoC CC1310 chipset and operates in the 868MHz frequency band.

The module has a range up to 1.5km and, with dimensions of 12 by 8 by 2mm, is said to be more than 50 per cent smaller than comparable models on the market.

Metis-e is optimised for automatic meter reading and for use in battery-powered devices. The module has two energy-saving modes, requiring 1.6µA in standby mode and 200nA in shutdown mode. The different wM-Bus modes S, T and C can also be selected to support various applications with different requirements.

The module offers developers flexibility with features that can be accessed via the uart interface. Metis-e (www.we-online.com/en/components/products/METIS-E) comes with a user manual; a software development kit is available.

Würth Elektronik makes electronic and electromechanical components for the electronics industry. It is one of the largest European manufacturers of passive components and is active in 50 countries. Production sites in Europe, Asia and North America supply a growing number of customers worldwide.

The product range includes EMC components, inductors, transformers, RF components, varistors, capacitors, resistors, quartz crystals, oscillators, power modules, wireless power transfer, LEDs, sensors, radio modules, connectors, power supply elements, switches, push-buttons, connection technology, fuse holders and wireless data transmission.

Würth Elektronik (www.we-online.com) is part of the Würth Group, and employs 7900 people. In 2023, Würth Elektronik generated sales of €1.24bn.