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 Eason wireless module

Wireless transceiver module yl-100t

Chip solution :Silicon Labs Si4432
carrier frequency :433/915MHz
Transmitting power :≤20dBm
Communication distance : 1-2km in open field
Product size :33.6mm*19mm
communication interface :UART - TTL
Product introduction : Si4432 RF wireless solution based on silicon labs, using GFSK modulation technology, with ST microcontroller, UART half duplex wireless data transmission module. It contains wireless transceiver communication program, which does not change user data and protocol. Users do not need to program and control the data receiving and sending process to realize data transparent transmission (sending is receiving), and 1km data transmission can be realized in open environment.

Product overview
Si4432 RF wireless solution based on silicon labs adopts GFSK modulation technology, with ST MCU and UART half duplex wireless data transmission module. It contains wireless transceiver communication program, which does not change user data and protocol. Users do not need to program and control the data receiving and sending process to realize data transparent transmission (sending is receiving), and 1km data transmission can be realized in open environment.


performance parameter Parameter value
Communication distance Open field sight distance 1-2km
Wireless solution Silicon Labs Si4432
modulation technique GFSK (Gaussian frequency shift keying), strong anti-interference ability
working frequency Optional 433 / 915MHz and other open frequency bands, specified when purchasing
Communication channel 8 channels available
Communication mode Half duplex transparent transmission, transmit receive automatic switch, receive is sent
working voltage 3.3 or 5V can be selected. When purchasing, 5V has one more LDO than 3.3V
Transmitting power Up to 20dbm (default maximum), 7 levels adjustable
Receiving sensitivity -121dBm@1.2kbps
communication interface UART - TTL 3.3V level
Air velocity 1200 / 2400 / 4800 / 9600 (default) / 19200bps can be set
Series Rate Can set 1200 / 2400 / 4800 / 9600 default / 19200 / 38400 / 57600bps
data format One start bit, eight data bits and one stop bit
Calibration mode No no parity (default) / odd parity / even even parity
Emission current When the transmission power is less than or equal to 100 Ma (20 DBM), the lower the transmission power, the smaller the emission current
Receiving current ≤30mA
Working environment: -40 to + 80 ℃, no condensation;
Antenna connector: The default SMA external screw and inner hole female head, impedance 50 Ω, can not be welded;
Size: The bare board is 35.8mm * 19.6mm (excluding antenna pedestal and pin);
 




Pin definition and Description:

Serial number Symbol Pin function
one GND Connect the negative pole of power supply or ground.
two VCC Connected to the positive pole of power supply, DC 3.3V or 5V optional, specified when purchasing.
three EN Sleep enable, high level (suspended) work, low level (ground) sleep.
four RXD Data input, connected to user's TXD.
five TXD Data output, connected to the user's RXD.
six AUX No connection is required.
seven SET Low level (grounded) enters setting mode; high level (suspended) exits setting mode.
In order to ensure the stability of MCU and Rx, it is recommended that the user should pay attention to the high bit error rate (BER) of Bau, set and Rx.