Product Details

Specifications

Si4431 RF chip, sensitivity (-121 dBm) and +13 dBm output power

RF4431 wireless transceiver module

RF4431 adopts Silicon Labs Si4431 RF chip, which is a highly integrated wireless ISM band transceiver chip. Extremely high receive sensitivity (-121 dBm) and +13 dBm output power ensure that the covering of the range and improve the data link performance. Built-in antenna diversity and the hopping function can be used to aggressively improve the performance.

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Electronic Specifications

Parameter	Min.	Typ.	Max.	Unit	Conditions
Operation conditions
Supply Voltage	1.8	3.3	3.6	V
Operating Temperature	-40	25	85	°C
Current consumption
RX Current		18.5		mA
TX current		35		mA	@13dBm
Sleep Current		<1		uA
RF parameters
Frequency	403	433	463	MHZ	@433MHZ
Frequency	838	868	898	MHZ	@868MHZ
Air data rate	0.123		256	Kbps	FSK
Output power	-8		13	dBm
Sensitivity		-118		dBm	@data=1.2kbps,Fdev=30kHZ

Features:
*Frequency Range: 433/868(Customizable 240-930 MHZ)
*Sensitivity up to -118dBm
*Data transfer rate:0.123-256 kbps
*FSK,GFSK and OOKModulation mode
*1.8-3.6 V Power supply
*Ultra-low consumption shutdown mode
*Digital received signal strength indicator (RSSI)
*Timed wake-up function
*The antenna automatically match and two-way switch control
*Configurable packet structure
*Preamble detection
*64-byte transmit and receive data register(FIFO)
*Low-power detection
*Temperature sensor and 8-bit analog-to-digital converters
*Operating Temperature Range:-40 ~ + 85 °C
*Integrated voltage regulator
*Frequency hopping
*Power-on reset function
*Built-in crystal adjustment function

Application:
*Remote control
*Remote meter reading
*Home security alarm and remote keyless entry
*Sensor networks
*Industrial control
*Tire Pressure Monitoring
*Home automation telemetry
*Health Monitoring
*Personal data records
*Wireless PC peripherals
*Toy control
*Tag reader

Schematic:

Pin Definition:

Dimension:

433MHz Spectrogram:

868MHz Spectrogram:

Furnace Temperature Curve: