Zigbee

See also, Thread

This is another short-range communication protocol based on the IEEE 802.15.4 standard. Zig-Bee is used in devices that transfer data infrequently at a low rate in a restricted area and within a range of 10–100 m.

Zigbee is a low-power, short-range wireless communication protocol designed primarily for Internet of Things (IoT) and smart home applications. Here are the key aspects:

What it is: Zigbee operates on the IEEE 802.15.4 standard and uses mesh networking, where devices can communicate directly with each other or relay messages through other devices in the network. This creates a self-healing network that can route around failed devices.

Key characteristics:

• Low power consumption - devices can run for years on batteries
• Short range - typically 10-20 meters indoors, up to 100 meters outdoors
• Low data rates - usually 20-250 kbps, sufficient for sensor data and control commands
• Mesh topology - devices can extend network range by acting as repeaters
• Self-organizing - networks can automatically form and repair themselves

Common applications:

• Smart home devices (lights, thermostats, door locks, sensors)
• Industrial automation and monitoring
• Healthcare monitoring systems
• Agricultural sensors
• Building automation systems

Advantages:

• Very energy efficient
• Reliable mesh networking
• Large device capacity (up to 65,000 devices per network)
• Standardized and interoperable

Limitations:

• Lower data throughput compared to Wi-Fi or Bluetooth
• Limited range without mesh extension
• Can experience interference from Wi-Fi networks (both use 2.4 GHz)

Zigbee competes with other IoT protocols like Z-Wave, Thread/Matter, and Wi-Fi, with each having different strengths depending on the specific use case.