Zigbee is a wireless communication technology used in smart homes and buildings (similar to Bluetooth)
 
• Low power consumption, 2.4GHZ
• Mesh networking (fig.3 ) means no single point of failure
• Works well even in large homes or multi-storey buildings
• Enable to connect more than 200 devices with single gateway
• Commands execute almost instantly
• Uses a separate network, not competing with home Wi-Fi
• Many products are compatible to Zigbee