The SYN531R is a Radio Frequency (RF) Transceiver Integrated Circuit (IC) manufactured by Synoxo. It is a single-chip transceiver that is housed in an 8-pin plastic Small-Outline Package (SOP) with 150milli-meter (mils) lead spacing. The device is compliant with the Restriction of Hazardous Substances (RoHS) lead-free standard. This transceiver IC has been designed to operate in the 300MHz to 935MHz frequency range and is capable of data rates up to 250kbps. The SYN531R has certain radio functionalities including Automatic Frequency Control (AFC), Automatic Gain Control (AGC), direct sequence spread spectrum (DSSS) transmitter and receiver, comprehensive channel filtering, and a low power hitless switch capability. It has been designed for use in a variety of remote controlled devices such as garage door openers, remote controlled toys, and wireless sensing applications.