The RTL8703BS-CG is a radio frequency transceiver integrated circuit (RFIC) with a QFN-40 package. This device is manufactured by Realtek and is RoHS compliant. It is a low power transceiver for ZigBee, IEEE 802.15.4/4e-2008 compliant designs. It offers a wide range of features for radio links in the 2.4GHz ISM band, including a low-power consumption, high RF sensitivity, built-in hardware encryption engine AES-128, and support for broadcast and multicast communication. The integrated RF transceiver, 8 bit 8051 MCU, AES Encryption Engine, and associated peripherals integrated on the same chip, make the RTL8703BS-CG an ideal solution for low power, cost effective, ISM band applications.