About

Zigbee is a low-power, wireless communication protocol operating at 2.4 GHz, commonly used in IoT devices like smart home sensors. This calculator estimates the indoor range of a Zigbee signal based on transmitter power, wall types, floors, and environment. It uses a path loss model to calculate signal strength and visualizes it with a heat-map, suggesting repeaters if the signal is too weak.

How to Use

• Enter the transmitter power in dBm (typically -30 to 20 dBm).
• Select the wall type and number of walls the signal passes through.
• Specify the number of floors (if any) for multi-story buildings.
• Choose the environment (indoor or outdoor).
• Enter the distance to evaluate signal strength.
• Select the heat-map type (2D or radial).
• Click "Calculate" to see results and the heat-map.
• Use "Export Results" to download the output as a text file.

Tips

• Place Zigbee devices away from metal objects to reduce interference.
• Use repeaters to extend range in large or multi-story buildings.
• Concrete walls cause significant signal loss; consider additional repeaters.
• Test different TX power levels to optimize battery life vs. range.
• Outdoor environments have less attenuation but may face interference from other 2.4 GHz devices.