Chengdu Ebyte Electronic Technology Co., Ltd.
E29-400TXXX product data sheet
Copyright ©2012–2023
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
18
serial parity bit.
0
0
8N1
（
default
）
0
1
8O1
1
0
8E1
1
1
8N1
（
equal to 00
）
2
1
0
Wireless air data rate
（
bps
）
The communication parties must have the same air
data rate.
The higher the air data rate is, the smaller the
delay in response, and the shorter the transmission
distance is.
0~4: BW = 250K
5~7: BW = 500K
0
0
0
Air data rate 2.4k
（
default
）
0
0
1
Air data rate 2.4K
0
1
0
Air data rate 2.4K
0
1
1
Air data rate 4.6k
1
0
0
Air data rate 8.2k
1
0
1
Air data rate 4.8k
1
1
0
Air data rate 16.4k
1
1
1
Air data rate 16.4k
04H
Read/
Write
REG1
7
6
Sub packet setting
When the data sent is smaller than the sub packet
length, the serial output of the receiving end is an
uninterrupted continuous output.
When the data sent is larger than the sub packet
length, the serial port in receiving end will sub
packet the data and then output them.
0
0
240 bytes
（
default
）
0
1
128 bytes
1
0
64 bytes
1
1
32 bytes
5 RF Power Mode
Users can change the RF power mode through AT
commands:
1. DCDC mode reduces power consumption by
sacrificing sensitivity;
2. LDO mode improves sensitivity by sacrificing
power consumption;
3. It is recommended to use DCDC mode for
battery-powered devices.
0 DCDC mode
（
default
）
1 LDO mode
4
3
2
Reserve
1
0
Transmitting power
Power and current are nonlinear, and power
efficiency is highest at maximum power.
The current does not decrease in proportion to the
decrease in power.
0
0
22dBm
（
default
）
0
1
20dBm
1
0
17dBm
1
1
14dBm
05H
Read/
Write
REG2
Channel control
（
CH
）
0-83 represents a total of 84 channels
Actual Frequency= 410.125 + CH *1M
06H
Read/
Write
REG3
7 Enable RSSI
After enabled, when the module receives the
wireless data, it will follow an RSSI strength byte
after output via the serial port TXD
0 Disable
（
default
）
1 Enable
6 Transmission mode
In Fixed point transmission mode, the module
recognizes the first three bytes of the serial data
as: address high + address low + channel and takes
it as the wireless transmitting target.
0 Transparent transmission mode
（
default
）
1 Fixed point transmission mode
5 Repeater function
After the repeater function is enabled, if the target
address is not the module itself, the module will
forward it once.
In order to prevent data return-back, it is
0 Disable repeater function
（
default
）
1 Enable repeater function
