The WL4455N RF Transceiver ICs SOT23-6 RoHS manufactured by Velex is an ultra-low power integrated transceiver designed for short-range radio communications. It was developed for easy integration and compatibility with other system components. Its features include data rate of up to 2.4Kbps, sensitivity of -89dBm and operating voltage range of 1.9-3.6V. It also supports a variety of modulation formats such as 2-FSK, GFSK, MSK, GMSK and OOK. The WL4455N has a built-in power amplifier, PA ramp controller, temperature compensation circuit, crystal oscillator, voltage regulators and PA. It is RoHS compliant and is available in a small SOT23-6 package.