ZigBee to Computer Connection (12/12/2005)... require lower bandwidth, low latency, very low energy consumption (for extended battery life), and low cost. ZigBee data rates are 250 kbps at 2.4 GHz, 40 kbps at 915 MHz, and 20 kbps at 868 MHz. Since ZigBee's protocol code stack is about 1/4th ...