Low power RF receiver:

Working frequency: 433~915Mhz
Low costing, high performance and price ratio
Tuning free during production
FSK reception
PLL and zero IF technology
Fast PLL lock time
High resolution PLL with 2.5kHz step
High data rate (up to 115.2Kbps with internal demodulator)
Differential antenna input,Automatic antenna tuning
Programmable receiver bandwidth (67 to 400kHz)
Analog and digital signal strength indicator(ARSSI/DRSSI)
DQD
Internal demodulator
SPI interface
Clock and reset signal output for external MCU use
16 bits FIFO
Low power mode (less than 0.5mA averaged current consumption)
10MHz crystal for PLL timing
Wakeup timer Low battery detection
Programmable capacitor bank
2.2 to 5.4V power supply
Low power consumption
Stand by current less than 0.3 μA