Oiyagai 3pcs 315MHz RF Wireless Transmitter and Receiver Module Kit for Arduino/Arm/McU/Raspberry pi: Amazon.com: Industrial & Scientific
315mhz / 433mhz Rf Transmitter And Receiver Module Kit For Arduino Raspberry Pi Wireless Diy - Integrated Circuits - AliExpress
Buy Ardest 433MHz RF Transmitter and Receiver Wireless Modules Link Kit for Arduino ARM MCU WL & Raspberry Pi 5 Pair Online at Lowest Price in Indonesia. B01N4WBL4V
Super Simple Raspberry Pi 433MHz Home Automation : 7 Steps - Instructables
sensor - Unable to receive anything with 433 mhz receiver connected to Pi 2 or Pi 3 - Raspberry Pi Stack Exchange