RF communication is used in Mobile communication and can have long rage communication and that’s what make them suitable for building IoT based applications. It is used in various areas like Remote lighting controls, long-range RFID, wireless alarm and security systems etc. The low power consumption makes them ideal for battery- based implementations. These modules are used for short range, low- budget, simplex-based communication. RF signals can travel between transmitter and receiver even when there is an obstruction. These RF modules operate at a specific frequency of 433MHz. The receiver receives the data through an antenna and gives the data to the microcontroller connected to it. The RF transmitter receives serial data from a microcontroller and transmits it to the receiver through an antenna connected to the 4 th pin of the transmitter. The data is sent serially from the transmitter and is received by a tuned receiver. The transmitter and receiver are needed to be interfaced with microcontrollers for data transfer.

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