Zigbee is a wireless communication standard designed to enable the control and monitoring of connected devices in a smart home. It is a low-power, close-proximity solution suited for home automation. Zigbee supports up to 65,000 nodes on a single network. With Zigbee, you dont have to build a smart home skill or connect a separate hub, as it can be used to connect smart home devices to Alexa. Amazon Echo 4th Gen devices have built-in smart home hubs that seamlessly connect and control Zigbee smart devices, such as light bulbs, door locks, and plugs. Zigbee is based on the IEEEs 802.15.4 personal-area network standard and is widely considered an alternative to Wi-Fi and Bluetooth for some applications including low-powered devices that dont require a lot of bandwidth. Zigbee is a protocol that was designed specifically for low power wireless applications like consumer electronics, medical equipment, industrial automation, and home automation. Zigbee operates in the 2.4 gigahertz frequency band.