DollaTek 5Pcs 433MHz RF Wireless Transmitter and Receiver Module Kit for Arduino Raspberry Pi: Amazon.co.uk: Electronics & Photo
WayinTop 3 Set 433MHz RF Wireless Transmitter and Receiver Module + RF 433MHz Copper Spring Antenna Kit, High Frequency Super Regenerative Transceiver Module for Arduino Burglar Alarm : Amazon.ae
433Mhz RF Transmitter with Receiver Kit for Arduino ARM MCU Wireless : Amazon.ca: Electronics