General Description
BDE-RFM204A is an ultra-low power, long-range Sub-1 GHz module targeted at low power sensors and long range applications.
BDE-RFM204A integrates a high performance RF core and also a powerful ARM cortex-M3 processor, which makes it suitable for certain products that need high performance MCU to deal with difficult applications. 
Key Features
 Ultra low power
Sub1 GHz
 Supports 915 MHz
 Powerful CortexM3
MCU for your IoT products
        Clock Speed: up to 48MHz
        Up to 128KB of InSystemProgrammable
Flash
        20KB of UltraLowLeakage SRAM
        30 GPIOs
 RF performance
        TX power: Up to +15 dBm
        RX sensitivity: up to 124 dBm
using LongRange Mode, 110 dBm at 50 kbps (Sub1 GHz)
 Communication
range
        800 meters (LOS) @ +10 dBm, 2.4
kbps
 Ultralow power
        Power supply: 1.8 V ~ 3.8 V
        RX: 5.4 mA
        TX @ +10 dBm: 13.4 mA
        Standby: 0.7 uA (RTC running and
RAM/CPU retention)
        Shutdown: 185 nA (Wake up on external
events)
 Antenna: PCB
antenna
 Size
                    25 mm x 15 mm x 1.7 mm (Without
Shielding)
                    25 mm x 15 mm x 2.15 mm (With Shielding)
Download
BDE-RFM204A_Datasheet_EN_V2.0.pdf