Philips 868

ZigBee is the name of a specification for a suite of high level communication protocols using small, low-power digital radios based on the IEEE 802. 15. 4 standard for wireless personal area networks (WPANs). The relationship between IEEE 802. 15. Scopri tutte le. 4-2003 and ZigBee is similar to that between IEEE 802. 11 and the Wi-Fi Alliance. The ZigBee 1. 0 specification was ratified on December 14, 2004 and is available to members of the ZigBee Alliance. An entry level membership in the ZigBee Alliance costs US$ 3500 and provides access to the specifications. Confronta i prezzi di 200 negozi. For non-commercial purposes, the ZigBee specification is available to the general public at the ZigBee Alliance homepage.

Introduction

ZigBee operates in the industrial, scientific and medical (ISM) radio bands; 868 MHz in Europe, 915 MHz in the USA and 2. 4 GHz in most jurisdictions worldwide. The technology is intended to be simpler and cheaper than other WPANs such as Bluetooth. The most capable ZigBee node type is said to require only about 10% of the software of a typical Bluetooth or Wireless Internet node, while the simplest nodes are about 2%. Philips 868 Phone Details and Review at MobilePhoneDetailscom. However, actual code sizes are much higher, more like 50% of Bluetooth code size. ZigBee chip vendors have announced 128-kilobyte devices.

As of 2005, the estimated cost of the radio for a ZigBee node is about $1.