ZigBee

is a method specified in 2004 for energy-efficient radio data transmission at close range (up to 100 meters). Z. is based on IEEE 802.15.4 (868 MHz and 2.45 GHz) with a data rate of up to 250 kbit/s. Thanks to its low latency times, Z. is suitable for near-real-time control applications. Z. is often seen as the standard for spontaneous networking of battery-operated sensors and end devices.

Source: logipedia / Fraunhofer IML