If it is desired to wirelessly communicate with a custom piece of hardware, several options are available to extend the wireless network for Chronos. Some options include heart rate monitors or bicycling sensors as well as hardware modules to wirelessly enable existing devices. Any device based on the sub-one gigahertz CC430, or a CC1101 radio will be able to communicate with the Chronos. Visit www.ti.com/chronoswiki for a full list of compatible hardware options.