RF and wireless chips are integrated circuits (IC) that are designed specifically for radio frequency (RF), microwave, and other wireless communications or data transmission applications. There are seven device types: receiver, repeater, transmitter, transceiver, ZigBee coordinator, ZigBee router, and ZigBee end device. ZigBee is a registered trademark of the ZigBee Alliance, a trade association which promotes ZigBee technology. Receivers are RF and wireless chips that are designed to receive signals or data from antennas or from other system devices. Repeaters are interfaces that re-transmit a weak signal after increasing its power. Transmitters are designed to generate and send signals or data. Transceivers are dual devices that can operate as a transmitter and as a receiver. ZigBee coordinators (ZC) are interfaces used as main controllers. ZigBee routers (ZR) are used to transmit data from node to node in a network. ZigBee end devices (ZED) talk only to a parent node. These RF and wireless chips do not transmit data to any other devices in the ZigBee network.