====== Zigbee ======

Zigbee is a low-power, short-range wireless mesh networking protocol commonly used for sensors and actuators.

===== Purpose in AOFS =====

  * Soil moisture sensors
  * Tank level sensors
  * Flow meters
  * Relay modules and valve actuators
  * Local environmental monitoring devices

===== Layer Mapping =====

  * Sensor/Actuator → Field Controller
  * Optional Field → Farm Controller bridging

===== Strengths =====

  * Low energy consumption
  * Mesh networking increases range
  * Suitable for battery-powered sensors
  * Mature ecosystem

===== AOFS Compliance Notes =====

  * Mesh instability must not compromise safety-critical logic
  * Field Controller must handle sensor timeout and fallback logic
  * Sensor failures must trigger safe fallback states
  * All readings must be timestamped and logged