Z-Wave is a wireless communications protocol used primarily for home automation. It is designed to provide reliable, low-latency transmission of small data packets at data rates up to 100kbit/s. It uses the Part 15 unlicensed industrial, scientific, and medical (ISM) band. It operates at 868.42 MHz in Europe, at 908.42 MHz in the U.S. and Canada. Z-Wave is based on a proprietary design and a sole chip vendor. The chip for Z-Wave nodes is the ZW0201, built around an Intel MCS-51 microcontroller.