Copyright ©2012–2022
，
Chengdu Ebyte Electronic Technology Co.,Ltd
25
3
-2 dBm
4
-5 dBm
5
-7 dBm
6
-13.5 dBm
7
-19.5 dBm
Note
Take effect immediately, save when power off
6.4.40 AT+MTU Set Bluetooth single packet length
Command
Response
Inquiry
AT+ MTU?
+OK=[para]
Set
AT+MTU =[para]
+OK
：
success
+ERR=[NUM], error
Parameter
Para MTU value, Min is 23
，
max is 244.
Note
1. Take effect immediately, save when power off
2. Due to the control byte
，
when set MTU=247
，
actual 244 bytes will be sent each packet
6.4.41 AT+VER inquiry software version number
Command
Response
Inquiry
AT+VER?
+OK=[para]
Set
\
\
Parameter
Para
：
Current software version number
Note
1. Only for inquiry
2.Software version 7212-1-12 onward supports this command
For
example
TX
：
AT+VER
？
Return
：
+OK=7212-1-12
