-12-
4-0, channel (410M + CHAN*1M), default 17H
（
433MHz
）
410~441MHz
5
OPTION
7
Fixed transmission enabling bit
（
similar to MODBUS
）
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 after complete the
process.
0
Transparent transmission mode
1
Fixed transmission mode
6
IO drive mode (default 1)
This bit is used to the module internal pull-
up resistor. It also increases the level’s
adaptability in case of open drain. But in
some cases, it may need external pull-up
resistor.
1
TXD and AUX push-pull outputs, RXD pull-up inputs
0
TXD
、
AUX open-collector outputs, RXD open-collector
inputs
5
4
3
wireless wake-up time
The transmit & receive module work in
mode 0, whose delay time is invalid &
can be arbitrary value.
The transmitter works in mode 1 can
0
0
0
250ms (default)
0
0
1
500ms
0
1
0
750ms
0
1
1
1000ms
transmit the preamble code of the
corresponding time continuously.
When the receiver works in mode 2, the
time means the monitor interval time
(wireless wake-up). Only the data from
transmitter that works in mode 1 can be
received.
1
0
0
1250ms
1
0
1
1500ms
1
1
0
1750ms
1
1
1
2000ms
2
FEC switch
After turn off FEC, the actual data
transmission rate increases while
anti-interference ability decreases. Also
the transmission distance is relatively
short.
Both communication parties must keep
on the same pages about turn-on or turn-
off FEC.
0
Turn off FEC
1
Turn on FEC (default)
1
0
Transmission power (approximation)
The external power must make sure the
ability of current output more than 1A and
ensure the power supply ripple within 100mV.
Low power transmission is not
recommended due to its low power supply
0
0
30dBm (default)
0
1
27dBm
1
0
24dBm
