SpecificationsFrequency 434 MHz,Transmitter: Saw filter based ASK hybrid transmitter,Transmitter supply voltage: 3~12V,Receiver: ASK super heterodyne receiver with PLL synthesizer and crystal oscillator, Etc.
These are cheap and simple to use RF receivers and transmitters. Its extreme small size coupled with its low power consumption makes it ideal for a variety of applications. These modules can be used with an encoder decoder IC pair or can be directly interfaced to a microcontrollerArduino.