The HC-11 433MHz Wireless Serial Port Module is based on the TI C1101 ultra low-power wireless transceiver IC. As well as the C1101 wireless transceiver, the module also includes a microcontroller with preprogrammed firmware (no programming required by the user) that provides seamless connection via a TTL serial UART interface. Using this interface the module can operate in one of 3 modes.

Example diagrams, pinout, features and datasheet available after purchase.