DollaTek 5Pcs 433MHz RF Wireless Transmitter and Receiver Module Kit for Arduino Raspberry Pi: Amazon.co.uk: Electronics & Photo
Oiyagai 3pcs 315MHz RF Wireless Transmitter and Receiver Module Kit for Arduino/Arm/McU/Raspberry pi: Amazon.com: Industrial & Scientific
QIACHIP Wireless 433Mhz RF Module Receiver and Transmitter Remote Control Built-in Learning Code 1527 Decoding 4 Channel Output (Transmitter and Receiver kit) - - Amazon.com
RF Transmitter 433MHZ Receiver Module Kit For Arduino ARM MCU Wireless : Amazon.de: Everything Else
Amazon.com: QIACHIP 3 Sets of 433mhz RF Transmitter and Receiver Module Wireless 4 Channel Output Link Kit Set with 1527 Learning Code for Remote Control : Tools & Home Improvement