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OBD-II GPS TrackerUSER MANUAL(Model:TK428 & TK428-M1)Version 1.0(Date: Aug.28, 2019)

TK428 & TK428-M1OBD-II GPS TrackerUser ManualCONTENTPreface . 2I. Features & Functions. 3II. How to Operate it . 4Authorize the Alarm-received Phone No. . 4Arm/Disarm by Phone Calling. 4Check the Vehicle’s Status . 5Arm/Disarm the System by SMS . 5Check the location by Google Map’s URL . 5Check the Real Physical Address . 5Change User Password . 6Over-speed Alert . 6Power Save Mode . 6Switch CAN-Bus Protocol . 7Upgrade. 7Other SMS Command List. 7III. The Setting for GPRS Connection . 9V. Transmission of CAN-BUS Data . 11VI . Specifications . 12VII. Alarm Types . 13VIII. Installation . 14IX. FAQs & Troubleshooting . 14X. Maintenance . 15Page 1

TK428 & TK428-M1OBD-II GPS TrackerUser ManualPrefaceTK428 OBD-II GPS tracker can also be used to do vehicle's telemetry viaOBD connector, it can read the vehicle's ECU's data (speed, rpm, odometer,speed, fuel consumption, harsh acceleration, harsh brake, DTC code, driverbehavior data.etc) via CAN-BUS.It has plug & play design, which is compatible with all the cars with OBD-IIconnector, and it supports all the CAN-BUS protocols as followings:No.Protocol standardVehicle type1ISO 9141-2(Asian, European, Chrysler)2ISO 14230 (KWP)Cars3ISO15765 (CAN)Cars4SAE J1939Most trucks5ISO 27145Truck brand: Scania, Man,Benz(Actros)Read it Firstly:Please read this manual thoroughly before you use the device; please keepit for future reference.Attention:(1) Please keep the device away from heavy water, high temperature, heavydust or strong magnetism.(2) Please prepare a valid GSM SIM card in advance.(3) For safety reason, do not tell other people the mobile phone number ofyour tracker.Page 2

TK428 & TK428-M1OBD-II GPS TrackerUser ManualI. Features & Functions1. Plug & play design with OBD-II connector, compatible with all the vehicleswith OBD-II connector, supports most of vehicles with the CAN-BUS;2. Track on command or by time interval via SMS/GPRS;3. Arm/disarm by SMS or phone call.4. Check the car’s real physical address (such as city name, street name.);5. Track by mobile SMS to get the latitude, longitude, speed, direction &odometer etc.6. Check the location directly by the Google map’s URL;7. Data logger to store 8000 waypoints.8. Smart engine ON/OFF detection;9. Odometer function10. Over-speed alarm;11. Movement alarm which can be used as an alarm;12. Engine on alarm;13. Vibration alarm;14. Power failure alarm, with internal rechargeable backup battery;15. Acceleration & deceleration(crash) alarm;16. Turn-over alarm;17. Trailer alarm;18. Routine optimization when vehicle turns a corner;19. OTA function(firmware upgraded on air);20. Voltage range: 10V-60VDC, suitable for car or big truck.21. Reliable design of framework with hardware watchdog.22. Power save working mode.23. Remote diagnostics function. Transmission of the CANBUS data via GPRSnetwork: (1) Vehicle's real-time data: battery's voltage, RPM, speed, TAPthrottle opening, engine load, coolant temperature, fuel consumption,odometer, error code & times, acceleration times & deceleration times; (2)Driver behavior data: ignition time, total driving time, total idling time,average engine hot-start time, average speed, history high speed, historyRPM, total acceleration times & total deceleration times.Page 3

TK428 & TK428-M1OBD-II GPS TrackerUser ManualII. How to Operate itThe default user password is 111111.If the user password is changed, user should send the SMS command withthe new user password instead of 111111.XXX is the control code, all the letters must be capital letters or in smallletters, command with mixed capital letter & small letter is not recognized bysystemAuthorize the Alarm-received Phone No.SMS command: 111111*10 Mobile #1*20 Mobile #2*30 Mobile #3*In case of alarm, if user wants to get the alarm SMS from the tracker, he/sheneeds send the following SMS to program the tracker firstly, otherwise, the alertinformation can't be received correctly.Example: User sends the SMS 111111*1013922713571*2018902267400* to thetracker’s SIM card number, if there is any alarm, system will send SMS to both of these twomobiles. In case of SOS alarm, the system will only send alarm to the mobile #2 & mobile#3.Arm/Disarm by Phone CallingUser could also use the 1st alarm-received mobile phone to call thetracker’s SIM card number, so as to arm/disarm the system.Arm: After hearing several ring tones, if the systems hang up the callautomatically, and call back you, it means that the system is armed.Disarm: After hearing several ring tones, if the system hangs up the callautomatically, and don’t call back you, it means that the system is disarmed.Note:(1) There is no communication fee for this operation, it is a very convenient way to arm& disarm the system.(2)The SIM card inside the device must have the function of Caller ID Display.(3) Only the 1st alarm-received mobile phone can realize this function.Page 4

TK428 & TK428-M1OBD-II GPS TrackerUser ManualCheck the Vehicle’s StatusSMS command: 111111CHK (or 111111chk)This instruction is used to inquiry the vehicle’s location & system’s status.The system will send back the SMS, includes the similar information, suchas “Armed ”Arm/Disarm the System by SMSSMS command: 111111ARM(or 111111arm)This SMS instruction is used to arm the systemWhen the system is armed, the movement alert is activated automatically.When the motorcycle/car moves, the alarm will be triggered.SMS command: 111111DSM(or 111111dsm)This command is used to disarm the system & stop sending alert SMS.Check the location by Google Map’s URLSMS command: 111111MAP(or 111111map)Upon receiving the SMS command, the tracker will automatically send backthe SMS including the Google map’s URL, user can use smart phone (GPRSdata service is enabled) to open the URL link, the car’s location will be showedon the Google map.User can also use the 2nd alarm-received phone to call the tracker, thetracker will send back the same content with Google link.Check the Real Physical AddressSMS command: 111111ADD(or 111111add)User can program the tracker to work with our platform. Once connected, user cansend this SMS command to get the actual address which is translated by the platform.Remark: (1) The GPRS data service of the tracker’s SIM card must be activated, andthe correct GPRS setting is needed (refer to the chapter of the setting of GPRSconnection); (2) The physical address depends on the map of the platform.Page 5

TK428 & TK428-M1OBD-II GPS TrackerUser ManualChange User PasswordSMS command: 111111PSWnnnnnn(or 111111pswnnnnnn)This instruction is used to change the user password. The length of theuser’s password is 3 6 digits. Users are suggested to change to the newpassword in use.Example: User sends the SMS “111111PSW12345” to the system SIM cardnumber, and gets the confirmed SMS “111111PSW12345” in 3 seconds. Itmeans that the user password has been changed to 12345.Remark: Please keep the password deep in mind if it is changed.Over-speed Alert111111SPD:Xx is the speed in KM/H , maximum value is 255KM/H(For example: 111111SPD:120, if the car speed is over 120KM/H, it willsend alert SMS to warn you).111111SPD:0111111SPD:to disable the over-speed alert. It is the default setting.to check the setting of over-speed alert.when the car speed is higher than the speed value, it will trigger theover-speed alarm.Remark: this function is just for reference, because there might be sometime delay or error in detecting the running car’s real speed by GPS.Power Save ModeSMS command: 111111PWR:XValue of X0 (default)ActionsDisable power save mode1Close GPS connection2Close GPRS connection,GPS moduleAfter setting 111111PWR:1(or 2), if there is no vibration and ACC is turnedOFF, the tracker will go into power save mode after 5 seconds.Once there is vibration or engine is turned ON, the tracker will wake up fromthe power save mode immediately.Page 6

TK428 & TK428-M1OBD-II GPS TrackerUser ManualSwitch CAN-Bus Protocol111111CAR:X(X 0 or 1)111111CAR:0: it uses the protocol for general cars (default)111111CAR:1: it uses the protocol for big truck (SAE J1939 & ISO 27145)Upgrade111111UPGThis instruction is used to upgrade the equipmentReply：Upgrade successfully!Upgrade fail! Network errorUpgrade fail! No upgrade filesUpgrade fail! Upgrade files errorThis is the latest versionOther SMS Command ListNote: ****** is user’s password and the default password is 111111. Thetracker will only accept commands with the correct password.FunctionsSMS CommandExampleAuto Report by SMS******RPT:X111111RPT:5Remarks: To set time interval for continuous automatic report via SMS.X is the interval in minute. If X 0 to turn off tracking by time.Example, the tracker will send location data back to 3rd alarm-received phone(XXX) every 5minutes. 111111*10*20*30XXX*Movement Alarm******MOV:X111111MOV:500X: X is the radius of the fence. default setting is 500 meters 0: close the movement alarm (when tracker is armed, it will be activated automatically.)Example: it is set the radius of movement alarm as 500meters.Set the Shock Sensor******SHK:XPage 7111111SHK:3

TK428 & TK428-M1OBD-II GPS TrackerUser ManualIt is to set the sensitivity of the shock sensor.sensitive; default X 2).Virtual ACC detection******VAC:Xby vibrationX 1 5. (X 1,less sensitive; X 5, most111111VAC:0X 0，Disable(default)；X 1, enable；Clear the Parameters******CLR!111111CLR!Remarks: it will reset all the parameters to the default settings.Reboot the Tracker******STR111111STRIt will reboot the tracker immediately.Routine Optimization******DEG:X111111DEG:30It is to set the angle. When the car turns a corner over this angle, then it will sample a locationto optimize the routine.Set the Time Zone******TZN:X111111TZN:-8.5It is to adjust the time difference comparing with Greenwich Mean Time, so that the displaytime in SMS content is the same as your local time. ( : means earlier, - mean later)Example: if your local time is 8hours & 30 minutes earlier than Greenwich Mean Time, thensend 111111TZN:-8.5 to adjust it.Set the O:X111111ODO:1000It is to check the present odometer;It is to set the tracker's initialized odometer as X meter, and startSet Heartbeat interval******HRT:X111111HRT:5It is to set the time interval of the tracker's heartbeat packet, default:3minute. Maximum:65535 minutes.Clear Data Logger******NUL111111NULIt is to clear the offline GPS data in the data loggerPage 8

TK428 & TK428-M1OBD-II GPS TrackerCheck the Gprs SettingUser Manual******WWW111111WWWIt is to check the GPRS settings.Check firmware version111111PAR& IMEI, others111111PARIt is to check the firmware version, IMEI, device ID GPRS settings, time zone.Read vehicle VIN no.******VIN111111VINIt is to read out the vehicle's VIN no. from CANBUS. The command works only when the OBDmodule is not in sleep modeReset fuel consumption******OIL111111oilIt is to reset the fuel consumption value of CANBUS data. The command works only when theOBD module is not in sleep modeRead & clear error code******ERR：& ******ERR111111ERR： it is use to read the error code.111111ERRit is to clear the error code .Adjust harsh brake &acceleration threshold******USP:X******DSP:X111111ERR：(with ：at the end of the command)(without ： at the end of the command)111111USP:30111111DSP:70X: is the speed(km/h), value range: 0 100 Km/hIf the change of car speed is larger than X between 2 seconds, it will be triggered as harshbrake or harsh acceleration.******USP:X: to set the threshold of harsh acceleration******DSP:X: to set the threshold of harsh brakeIII. The Setting for GPRS ConnectionThe GPRS setting is necessary for using the following 2 functions:(1) Check the car’s real physical address by send 111111ADD(2) Online tracking service by web-based tracking platformSMS format:Page 9