Ham Radio Module, 433MHz RF Low Noise Amplifier Radio Frequency LNA Gain: 22dB photodiode Module Radio Amplifier : Amazon.ca: Industrial & Scientific
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