Long Range, 1.8km, Arduino to Arduino Wireless Communication With the HC-12.

Smart Home 433Mhz AC85-220V 1CH Wireless Remote Switch Relay Receiver Transmitter Universal Remote Control Switch - Walmart.ca

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RF 315/433 MHz Transmitter-receiver Module and Arduino

433MHz RF Transmitter and Receiver Wireless Module Kit This RF Transmitter and Receiver module may broadcast data from any conventional CMOS/TTL source at up to 3KHz. It is simple to use and consumes little electricity. The transmitter module is extremely simple to use and consumes very little power Website - https://electronicspices.com/product/433mhz-rf-transmitter-and-receiver-wireless-module-kit If You Need More Component like Transistor, Ic, Led, and other electronic component you can buy f

Qiachip TX118SA-4 ASK RF Transmitter Module Remote Control 1527 Encoding For Arduino Module DIY 433MHz

RF 433 MHZ TRANSMITTER AND RECEIVER (WITH DEMO)

A One-Transistor Ham Transmitter Anyone Can Build