868 MHz radio modules offers Bluetooth alternative with far greater range

Würth Elektronik has unveiled two new highly compact radio modules that offer developers the flexibility to design custom wireless solutions beyond standard protocols. The Tarvos-e and Olis-e modules, measuring just 12 × 8 × 2 mm, feature hardware identical to the Metis-e radio module and are based on the Texas Instruments SoC CC1310 chipset operating in the 868 MHz frequency band. These modules are ideal for battery-powered devices due to their compact design and energy-efficient operating modes, consuming only 1.6 µA and 200 nA in Standby and Shutdown modes, respectively.

The Tarvos-e module utilizes Würth Elektronik’s WE-ProWare radio protocol and is compatible with Tarvos-III and Thebe-II, offering optimization for high data rates or extended range up to 2.7 km. With an RF output power of 14 dBm and a UART interface for communication, it provides maximum flexibility for various applications. On the other hand, the Olis-e module allows firmware customization using the TI SIMPLELINK CC13x0 software development kit, enabling developers to implement custom wireless protocols and system logic directly on the SoC.

These radio modules use proprietary protocols, making them ideal for applications requiring individually developed transmitter and receiver sides. The use of the 868 MHz frequency band ensures greater indoor range compared to Bluetooth, enabling reliable communication through obstacles like walls. Additionally, a variant for the 915 MHz frequency range is available upon request, expanding usability in markets like the USA where the 915 MHz band is license-free.

All versions of the modules (Metis-e, Tarvos-e, Olis-e) come with evaluation boards, a USB interface for PC connection, a detailed user manual, and software tools to facilitate development.


Filed Under: Development tool, Passive Components, Tools, Wi-Fi / Bluetooth