Description :

-The 434MHz base RFM69HCW Wireless Transceiver is a radio module that operates in the unlicensed ISM band, a set of frequencies set aside for low-power, short-range, license-free radios.
-It's perfect for building inexpensive short-range wireless networks of sensors and actuators for home automation, citizen science and more.
-The RFM69HCW operates on the 434MHz frequency and is capable of transmitting at up to 100mW and up to 300kbps.
-At full power and with simple wire antennas, messages can be transmitted through numerous internal walls in a large office building. In open air, a range of 500 meters or more can be reached.
-The RFM69HCW uses an SPI (Serial Peripheral Interface) to communicate with a host microcontroller, and several good Arduino libraries are available.
-It supports up to 256 networks of 255 nodes per network, features AES encryption to keep your data private, and transmits data packets up to 66 bytes long.
-SparkFun sells two versions of the RFM69HCW: a 915MHz version and this 434MHz version. The -915MHz version is for use in the Americas, and the 434MHz version is for use in Europe, Asia, and Africa.

Features:

- 20 dBm - 100 mW Power Output Capability
- High Sensitivity: down to -120 dBm at 1.2 kbps
- High Selectivity: 16-tap FIR Channel Filter
- Bullet-proof front end: IIP3 = -18 dBm, IIP2 = 35 dBm,80 dB Blocking Immunity, no Image Frequency response
- Low current: Rx = 16 mA, 100nA register retention
- Programmable Pout: -18 to 20 dBm in 1dB steps
- Constant RF performance over voltage range of module
- FSK Bit rates up to 300 kb/s
- Fully integrated synthesizer with a resolution of 61 Hz
- FSK, GFSK, MSK, GMSK and OOK modulations
- Built-in Bit Synchronizer performing Clock Recovery
- Incoming Sync Word Recognition
- 115 dB Dynamic Range RSSI
- Automatic RF Sense with ultra-fast AFC
- Packet engine with CRC-16, AES-128, 66-byte FIFO
- Built-in temperature sensor