Which of the following is an open source protocol that utilizes mesh networking to relay commands to connected devices within the customer premise?

Zigbee is an open source protocol designed specifically for low-power, low-data-rate wireless communication. It employs mesh networking, which allows devices to communicate with each other directly as well as through interconnecting devices, thereby extending the range and reliability of the network. This is particularly beneficial in home automation and IoT applications, where devices need to relay commands and share information seamlessly.

The mesh networking capability of Zigbee enables devices that may not be in direct line of sight to still communicate through intermediary nodes, creating a robust and resilient network. Each device in a Zigbee network can act as a repeater, which helps to extend the coverage area without the need for a central hub, making it especially useful in larger premises.

In contrast, Bluetooth is more focused on short-range direct communication and does not support mesh networking in the same way that Zigbee does, limiting its use in broad device networks. Insteon is a proprietary system that combines wireless and powerline communication but does not qualify as open source. Wi-Fi provides high-speed broadband access but is not inherently designed for low-power device communication or mesh networking in the context of home automation. Therefore, Zigbee stands out as the most suitable option for relaying commands through an open-source mesh network within