Mobile Technology MTI8038 User manual

Bluetooth Serial Adapter
MTI8038
User Manual

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Content
1. Technical Specifications............................................................................................................2
2. Power Consumption..................................................................................................................2
3. Description of LED indicator and inner button.........................................................................3
4. Instructions................................................................................................................................3
5. AT Command............................................................................................................................4
1. Test Command ..................................................................................................................5
2. Set / Inquire the baud rate.................................................................................................5
3. Set / Inquire flow control mode ........................................................................................5
4. Set/Inquire device name....................................................................................................5
5. Set / Inquire whether authenticate.....................................................................................6
6. Set / Inquire authentication password...............................................................................6
7. Set / Inquire device type....................................................................................................6
8. Set / Inquire device role....................................................................................................7
9. Exit the parameter setting mode........................................................................................7
10. Set / Inquire whether it is bind......................................................................................7
11. Set/Inquire the memorized remote Bluetooth device....................................................7
12. Clear the memorized address ........................................................................................8
13. Inquire remote Bluetooth devices .................................................................................8
14. Set / Inquire the data processing mode when not connected.........................................8
15. Inquire local Bluetooth address.....................................................................................8
16. Inquire software version................................................................................................9
17. Software reset................................................................................................................9
18. Restore default settings.................................................................................................9
19. Inquire all commands....................................................................................................9
20. Device firmware upgrade..............................................................................................9
6. FCC STATEMENT.................................................................................................................10

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1. Technical Specifications
Model MTI8038
Bluetooth version Compatible Bluetooth 3.0 Specification
RF output power(Conducted) 4.02dBm
Operating Frequency 2402～2480 MHz
Spectrum extensions FHSS
Antenna Type Chip
Sensitivity <-92dBm at < 0.1% BER
Protocol LM、LC、L2cap、SDP、RFCOMM
Support services Bluetooth Serial Port Profile (SPP)
Power supply DC 7~17V (Typical:12VDC) 100mA Rated current
Security Security certification, data encryption
Baud rate 1200～921600bps
LED indicator Power status、working mode
Communication PC、PDA、Smartphone etc.
Application Vehicular、Industrial Products etc.
Maximum connection distance 30 meters in open field
Working temperature -40℃～+85℃
Size 82（L）×42（W）×21（H）
2. Power Consumption
Mode Test Condition (Slave
Device)
Maximum
mA
Typical
Value mA
Minimum
mA
Connected Data
transmission 14.7 12.6 12.1
No
connection
Connect（inquiry）
interval=2048
Connect（inquiry）
continue=18
17.2 8.9 7.8
Notes:
Under regular mode, all parameter is default.
The connection distance between this adapter and smart device is 10 meters. It continuously
sends data at the same time with 38400 baud rate.

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3. Description of LED indicator and inner button
There are two LED indicators on the serial adapter, one indicates connection status and one
indicates master/slave mode.
Master/slave mode indicator (red)
In the parameter setting mode, this indicator is off.
In the data working mode, this indicator will be in the following status：
Connection status indicator (green)
In the parameter setting mode, this indicator is off.
In the data working mode, this indicator will be in the following status：
Inner button：There is a button on PCB inside the black case. If need to restore factory
settings, please press this button for 2 seconds.
4. Instructions
Power on this product.
The default factory setting of the adapter is 38400bps baud rate, 8-N-1 communication
mode, no flow control. The match code is 1234.
In the data working mode, the Bluetooth smart device of the user terminal will search for
the adapter, and after the authentication is passed, it will remember (save) the address of
the adapter and establish a connection. The stored address and default connection
password can be cleared by AT commands and parameter setting tools. If you need to
modify the parameters, send "+++" within 30 seconds after power-on to enter the
Working role Status
Slave role once every 2 seconds
Master role once every 5 seconds
Connection status Status
Not connected once every second
Connected off

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parameter setting mode, and use the relevant AT commands to set parameters, such as baud
rate, authentication, and binding address.
The adapter is connected successfully, the connection indicator (green light) is off, and the
status indicator (red light) keeps flashing. At this point, data can communicate with each
other. For user equipment, this adapter can replace serial cable and receive data directly.
Once the connection is established, unless the user device has a weak signal or actively
disconnects Bluetooth, the adapter will not actively disconnect, and the connection will
remain.
Note: This parameter is stored in the Bluetooth chip. Therefore, even if the power is turned
off, the parameters will remain the same as last time and will not be lost. After the
parameter modification is completed, please send "AT+exit" or power on again to make the
adapter enter the data mode.
If it is used for in-vehicle communication, it needs to cooperate with smart devices
(Android V7.0 or above, IOS 8 or above) to conduct data communication through the MTI
APP to collect vehicle information data.
5. AT Command
Note：
The parameter setting command can be executed only when the serial adapter is in the
Parameter Setting mode(that is, power on and send “+++”). After the parameters are
modified, please return to data mode and then the parameter settings take effect.
Each command must make the two bytes (\r\n)carriage return and line feed ((ASCII
codes are 0x0D, 0x0A) as the end sign, or command can not be identified.
The brackets "<>"outside of the parameter is added for convenient reading and the
actual command is without the “<>".

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1. Test Command
Command Response Parameter
AT\r\n \r\nOK\r\n None
2. Set / Inquire the baud rate
Command Response Parameter
AT+BAUD=<rate>\r\n \r\nOK\r\n rate：baud rate（1200、2400
、
4800、9600、19200、38000、
38400 、57600 、115200 、
230400、460800、921600）
Default：38400
AT+BAUD?\r\n \r\n＋BAUD：<rate>\r\n
\r\nOK\r\n
3. Set / Inquire flow control mode
Command Response Parameter
AT+FLOWCONTROL=<type>\r\n \r\n OK\r\n <type>：
0：No flow control
1：adapt hardware
flow control
Default：0
AT+FLOWCONTROL?\r\n \r\n＋FLOWCONTROL：<type>\r\n
\r\n OK\r\n
4. Set/Inquire device name
Command Response Parameter
AT+NAME=<name>\r\n \r\n OK\r\n name：device name
Default: definition
according to the
specification of products
(when modifying, no more
than 29 bytes.)
AT+NAME?\r\n \r\n＋NAME：<name>\r\n
\r\n OK\r\n

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5. Set / Inquire whether authenticate
Command Response Parameter
AT+AUTH=<enable>\r\n \r\n OK\r\n enable ：
0: Disable simple pairing
1: enable simple pairing
Default：1
AT+AUTH?\r\n \r\n＋AUTH：<enable>\r\n
\r\n OK\r\n
Authentication: the security authentication is provided by this serial adapter. Only the
authenticated users can communicate with it. If it is a pair of serial adapters, these processes are
done automatically. When AT+AUTH=1, the serial adapter will automatically use the simple
pairing mode to authenticate the device that supports simple matching. For the device that does
not support simple matching, the serial adapter will authenticate the password (default password:
1234).
6. Set / Inquire authentication password
Command Response Parameter
AT+PASSWORD=<password>\r\n \r\n OK\r\n password：
Default：1234
(No more than 4 or 6
Bytes)
AT+PASSWORD?\r\n \r\n+PASSWORD:<password>\r\n
\r\n OK\r\n
7. Set / Inquire device type
Command Response Parameter
AT+CLASS=<cod>\r\n \r\n OK\r\n cod：device type(The
length must be 6 bytes. )
Default：000000
AT+CLASS?\r\n \r\n＋CLASS：<cod>\r\n
\r\n OK\r\n
Device type: When the device type is keyboard, simple pairing must be enabled (AT+AUTH=1).
Otherwise, the module may fail to pair the remote device.

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8. Set / Inquire device role
Command Response Parameter
AT+ROLE=<role>\r\n \r\n OK\r\n role：
0：slave role
1：master role
Default：0
AT+ROLE?\r\n \r\n＋ROLE：<role>\r\n
\r\n OK\r\n
9. Exit the parameter setting mode
Command Response Parameter
AT+EXIT\r\n \r\n OK\r\n None
10. Set / Inquire whether it is bind
Command Response Parameter
AT+BIND=<enable>\r\n \r\n OK\r\n enable：
0: not bind address
1: bind address
Default: 0
AT+BIND?\r\n \r\n＋BIND：<enable>\r\n
\r\n OK\r\n
When binding the address: If the address has been memorized, the query matching is not allowed,
and it can only be connected through its storage device; once the adapter has memorized the
address, it can only establish a connection with the device it has memorized, and cannot establish
a connection with other devices. . Therefore, when binding the address, if you want to establish a
connection with another device, you must clear the stored address.
11. Set/Inquire the memorized remote Bluetooth device
Command Response Parameter
AT+RADDR=<addr>\r\n \r\n OK\r\n addr ：
remote Bluetooth
address
AT+RADDR?\r\n \r\n+RADDR:<addr>\r\n
\r\n OK\r\n
If the adapter is not bound to the address, it can still be connected by other Bluetooth devices. If
an address is bound, the binding address can be set by this command.

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12. Clear the memorized address
Command Response Parameter
AT+CLEARADDR\r\n \r\n OK\r\n None
13. Inquire remote Bluetooth devices
Command Response Parameter
AT+INQ\r\n \r\n OK\r\n
\r\n+INQRESU ：
<addr>,<class>,<name>\r\n
Inquire Results
\r\n+INQCOMP\r\n
Inquire complete
<addr> ：
Bluetooth address
<class>：
<name> ：device
name
14. Set / Inquire the data processing mode when not connected
Command Response Parameter
AT+DATAMODE=<mode>\r\n \r\n OK\r\n <mode>：
0: The data is stored in
flash
until the
connection is
established and sent to
the
other Bluetooth device
1: When not
connected, the
data received will lost
directly
Default: 0
AT+DATAMODE?\r\n \r\n＋DATAMODE：<mode>\r\n
\r\n OK\r\n
15. Inquire local Bluetooth address
Note: When using the address setting command, it must be in the same format as the local or
remote Bluetooth address queried.
Command Response Parameter
AT+LADDR?\r\n \r\n＋LADDR：<addr>\r\n
\r\n OK\r\n
addr：local Bluetooth address

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16. Inquire software version
Command Response Parameter
AT+VERSION?\r\n \r\n＋VERSION：<Para1>\r\n
\r\n OK\r\n
Para1：software version
17. Software reset
Command Response Parameter
AT+RESTART\r\n \r\n OK\r\n
After sending this command, the serial adapter’s program will reset and no need to re-power.
18. Restore default settings
Command Response Parameter
AT+RESET\r\n \r\n OK\r\n None
19. Inquire all commands
20. Device firmware upgrade
Command Response Parameter
AT+DFU\r\n \r\n OK\r\n None
Manufacture：
Company Name：Chongqing JINOU Science & Technology Development Co., Ltd.
Address：D1-802, Overseas Students Pioneer Park, No.71 Kecheng Rd, Jiulongpo
District, 400039, Chongqing
Command Response Parameter
ATZ?\r\n List all commands
\r\n OK\r\n
List all the
commands