20dBm SI4432 Data radio modem DRF4432D20
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DRF4432D20 is a low-cost sub-1 GHz transceiver module designed for operations in the unlicensed ISM (Industrial Scientific Medical) and LPRD bands. GFSK (Frequency Shift Keying) modulation/demodulation, multi-channel operation, high bandwidth efficiency and anti-blocking performance make DRF4432D20 modules easy to realize the robust and reliable wireless link.
* 433 GFSK transceiver
* 20dBm output power
* -121dBm sensitivity
* Multi-channel selection
* RSSI Indication Output
* Standard UART interface
* Standby current < 3uA
* Supply voltage: 3.4~5.5V

Home automation,   Security alarm,  Telemetry,  Automatic meter reading,  Contactless access,  Wireless data logger,  Remote motor control
The module can be configured to work in different channels with 200k Hz space. It adopts high efficient looped interleaving EDAC (Error Detection and correction) coding with coding gain up to 3dB which keeps in advance in EDAC and coding efficiency over normal FEC (Forward Error Correction). Because of its high reliability in correction, modules can filter error and fake information automatically and realize truly transparent wireless link, which makes DRF4432D20 very suitable in the rigid communication environment.
DRF4432D20 integrates 256 bytes buffer. When the buffer is empty, users can transfer 256 bytes data per time and even limitless data transfer can be achieved as long as RF data rate (RF module to RF module) is configured to be faster than UART data rate (MCU to RF module). The module provides standard UART/TTL interface for selection. Users can choose seven data rates and three parity checks which make DRF4432D20 possibly tailor-made for different applications. DRF4432D20 operates at 3.4~5.5V with extra low standby current which makes it suitable for battery powered-up applications.

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