Ebyte E30-433T20S User Manual page 15

Chengdu Ebyte Electronic Technology Co,;Ltd
High address byte of module
1 ADDH （the default 00H）
Low address byte of module
2 ADDL
（the default 00H）
7
0
0
1
1
5
0
0
0
0
1
3 SPED 1
1
1
2
0
0
0
0
1
1
1
1
7
4 CHAN
4 ~ 0, channel (425M + CHAN * 0.1M) , default 50H (433MHz)
7
0
OPTIO
5
N
1
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6 UART parity bit
0 8N1 (default)
1 8O1
0 8 E1
1 8N1 (equal to 00)
4 3 TTL UART baud rate（bps）
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
1 0
Air data rate（bps）
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
6 5
Communication channel
Fixed transmission enabling bit（similar to MODBUS）
Transparent transmission mode
Fixed transmission mode
1200
2400
4800
9600 (default)
19200
38400
57600
115200
1k
2k
5k (default)
8k
10k
15k
20k
25k
reserved
E30-433T20S user manual
00H-FFH
00H-FFH
UART mode can be different between

communication parties
UART baud rate can be different between

communication parties
The UART baud rate has nothing to do with

wireless transmission parameters & won't
affect the wireless transmit / receive features.
The lower the air data rate, the longer the

transmitting distance, better anti-interference
performance and longer transmitting time
The air data rate must keep the same for both

communication parties.
Write 0
00H-FFH, correspond to 425 ~ 450.5MHz
In fixed transmission mode, the first three

bytes of each user's data frame can be used as
high/low address and channel. The module
changes its address and channel when
transmit. And it will revert to original setting
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