Seeed Studio 433Mhz RF Link Kit

The popular link is like this: MCU > Encoder > Transmitter - Receiver > Decoder > MCU, PT2272(Encoder) and PT2262(Decoder) are optional, their existence is to 1)avoid confusing when multiple RF links in range 2) isolate disturbance. You can integrate the encoding and decoding work to the MCUs on both side.