OPEN-SMART Long Range 315MHz RF Wireless Transceiver Kit for Arduino Board Mini RF transmitter receiver module 315 MHz Kit

Transmitter working voltage: 4~12VDC
Transmitter working current: 40mA
Transmit power: 27dBm @ 12VDC
Working frequency: 315MHz
Transfer rate: 4.8kbps (max)
Transmission distance: When supply power is 5V, the open area transmission distance is around 150 meters. To increase transmit range, you can increase the power to the transmitted up to 12V DC.
Antenna: Onboard 315MHz dedicated PCB Antenna.
Receiver operating voltage: 2~5.5V DC
Receiver current: 2mA
Sensitivity: -110db