ABCDEFGHIJKLMNOPQRSTUVWXYZ
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MT03, MT8A COMMANDS LIST
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No.FunctionCommandReplyExplanation
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QUERY CLASS
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1Check firmware versionVERSION#e.g. [VERSION]VT81_V141_AAAP_V1.0_20200821_1344
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2Check parametersPARAM#e.g.
IMEI:;SOS:,,;CENTER:;TimeZone:E,8,0 (AUTO);e.g.
IMEI:;SOS:,,;CENTER:;TimeZone:E,8,0 (AUTO);
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3Query device network setting GPRSSET#e.g.
GPRS,ON;Currently use APN:,,;APN Auto set:ON;SERVER,1,gpsdev.track.com,21100;URL,http://maps.google.com/maps?q=e.g.
GPRS,ON;Currently use APN:,,;APN Auto set:ON;SERVER,1,gpsdev.track.com,21100;URL,http://maps.google.com/maps?q=
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4Check statusSTATUS# e.g.
Battery:3.48V,Battery too low! Warning; GPRS:Link Down; NO NETWORK; GPS:Successful positioning; SVS Used in fix:22(25); GPS Signal Level:32,28,33,29,28,21,35,24,32,30,24,40,39,35,33,34,36,31,33,31,36,34 ACC:OFF; Defense:OFF; e.g.
Battery:3.48V,Battery too low! Warning; GPRS:Link Down; NO NETWORK; GPS:Successful positioning; SVS Used in fix:22(25); GPS Signal Level:32,28,33,29,28,21,35,24,32,30,24,40,39,35,33,34,36,31,33,31,36,34 ACC:OFF; Defense:OFF;
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6Check position statusWHERE#e.g.
Current position! Lat:N22.577002,Lon:E113.916794,Course:0.00,Speed:0.00Km/h,DateTime:2020-10-20 13:56:48e.g.
Current position! Lat:N22.577002,Lon:E113.916794,Course:0.00,Speed:0.00Km/h,DateTime:2020-10-20 13:56:48
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7Check URLURL#e.g.
<10-2013:56>
http://maps.google.com/maps?q=N22.577005,E113.916794
e.g.
<10-2013:56>
http://maps.google.com/maps?q=N22.577005,E113.916794
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8Check position（only support sms)POSITION#
OR
123#POSITION#
OR
123#		e.g.
GPS located: 01-08
17:36http://maps.google.com/maps?q=N22.577156,E113.916748
e.g.
GPS located: 01-08
17:36http://maps.google.com/maps?q=N22.577156,E113.916748
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9Query the lock status of the current domainQLOCKIP#e.g. QLOCKIP,0(0:unlock,1:lock)
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5Check the work status and key parametersCHECK#e.g.
CHECK#
IMEI:;
VERSION:ET310_TEST_V01_20200520_1425;
SERVER:1,test.topstargps.com,11139;
BSERVER:0,0.0.0.0,0;
GET IP:120.234.211.126;
APN:CMnet,,;
CSQ: [4G]13;
GPRS:1;
GPS:OFF;
BDS:OFF;
BAT:3.79;
POWER:0.00;
TIMER:10,10;
SOS NUM:,,;
CENTER:,,;
CELL:NB-Iot,searching(1);
IMSI:460044335609859;
ICCID:898604231919C2690159;
EURL:http://maps.google.com/maps?q=;e.g.
CHECK#
IMEI:;
VERSION:ET310_TEST_V01_20200520_1425;
SERVER:1,test.topstargps.com,11139;
BSERVER:0,0.0.0.0,0;
GET IP:120.234.211.126;
APN:CMnet,,;
CSQ: [4G]13;
GPRS:1;
GPS:OFF;
BDS:OFF;
BAT:3.79;
POWER:0.00;
TIMER:10,10;
SOS NUM:,,;
CENTER:,,;
CELL:NB-Iot,searching(1);
IMSI:460044335609859;
ICCID:898604231919C2690159;
EURL:http://maps.google.com/maps?q=;
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SETTING CLASS
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1Set APN
APN, apnname#
or
APN, apnname,user,pwd#

APN, apnname#
or
APN, apnname,user,pwd#
Turn off automatic APN and set by yourself.
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ASETAPN,A#A=ON/OFF (default :ON)
ON: means enable APN self-adaptation
OFF: means disable APN self-adaptationA=ON/OFF (default :ON)
ON: means enable APN self-adaptation
OFF: means disable APN self-adaptation
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APN#Check the current APN parameters.
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2Set server parametersSERVER,mode,domainName,port,protocol#
or
SERVER,mode,ip,port,protocol#SERVER,mode,domainName,port,protocol#
or
SERVER,mode,ip,port,protocol#		eg: SERVER,1,www.ydpa.com,8011,0#
SERVER,0,211.154.135.113,8011,0#
mode = 1 means set with domain name
mode = 0 means set with ip address
protocol = 0 means connect server with TCP protocol
protocol = 1 means connect server with UDP protocoleg: SERVER,1,www.ydpat.com,8011,0#
SERVER,0,211.154.135.113,8011,0#
mode = 1 means set with domain name
mode = 0 means set with ip address
protocol = 0 means connect server with TCP protocol
protocol = 1 means connect server with UDP protocol
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SERVER#Check the current sever parameters
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3Set GMT parameterGMT,A,B,C#A: E or W; "E" means eastern time zone, "W" means western time zone; default: E
B: 0–12; time zone, default: 8
C: 0/15/30/45; half time zone; default: 0
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ASETGMT,A#A=ON/OFF (default :ON)
ON: means enable GMT self-adaptation
OFF: means disable GMT self-adaptation
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GMT#Check the current time zone parameters
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4Restore to factory FACTORY#Restore to factory settings
Restore all command parameters except domain name, APN, locked domain name, and ACC status
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5Reboot RESET#The terminal will restart after 20 seconds!
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6SOS settingSOS,A,phone number 1,phone number 2,phone number 3#Add SOS phone number.
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SOS,D,sequence number 1, sequence number 2,sequence number 3#Delete the phone number according to the sequence number.
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SOS,D,phone number#Delete the matching SOS phone number.
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SOS#Check the SOS phone number.
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7Center phone number settingCENTER, A,phone number#Add center phone number.
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CENTER, D#Delete center phone number.
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CENTER#Check the center phone number.
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8Set GPS data sending interval TIMER,T1,T2#T1 indicates upload interval in ACC ON state; value range: 5–18000 or 0 (seconds); 0 means no upload, default: 10;
T2 indicates upload interval in ACC OFF state; value range: 5–18000 (seconds); default: 10;T1 indicates upload interval in ACC ON state; value range: 5–18000 or 0 (seconds); 0 means no upload, default: 10;
T2 indicates upload interval in ACC OFF state; value range: 5–18000 (seconds); default: 10;T1 indicates upload interval in ACC ON state; value range: 5–18000 or 0 (seconds); 0 means no upload, default: 10;
T2 indicates upload interval in ACC OFF state; value range: 5–18000 (seconds); default: 10;T1 indicates upload interval in ACC ON state; value range: 5–18000 or 0 (seconds); 0 means no upload, default: 10;
T2 indicates upload interval in ACC OFF state; value range: 5–18000 (seconds); default: 10;
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TIMER#Check the current parameters of T1 and T2.
(If it is set to fixed-distance mode, then (OFF) will be carried in the data packet. )Check the current parameters of T1 and T2.
(If it is set to fixed-distance mode, then (OFF) will be carried in the data packet. )Check the current parameters of T1 and T2.
(If it is set to fixed-distance mode, then (OFF) will be carried in the data packet. )Check the current parameters of T1 and T2.
(If it is set to fixed-distance mode, then (OFF) will be carried in the data packet. )
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9Set distance interval of GPS data sending DISTANCE,D#D indicates fixed-distance upload interval; value range: 0, 50–10000 (meters); default: 300;
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DISTANCE#Check the current distance interval.
(If it is set to fixed-time mode, then (OFF) will be carried in the data packet. )Check the current distance interval.
(If it is set to fixed-time mode, then (OFF) will be carried in the data packet. )Check the current distance interval.
(If it is set to fixed-time mode, then (OFF) will be carried in the data packet. )Check the current distance interval.
(If it is set to fixed-time mode, then (OFF) will be carried in the data packet. )
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10Set ACC status changes report settingACCREP,A#A=ON/OFF,default:ON
ON: enable ACC status changes report feature.
OFF: disable ACC status changes report feature.A=ON/OFF,default:ON
ON: enable ACC status changes report feature.
OFF: disable ACC status changes report feature.A=ON/OFF,default:ON
ON: enable ACC status changes report feature.
OFF: disable ACC status changes report feature.A=ON/OFF,default:ON
ON: enable ACC status changes report feature.
OFF: disable ACC status changes report feature.
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ACCREP#Query ACC status changes report setting.
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11Set angle report parametersANGLEREP,A,B,C#A=ON/OFF,default:ON ON: enable angle report feature; OFF: disable angle report feature.
B: Angle threshold, range:5-180 (degree);
C: Detection time range: 2-5 (second);
(default anglerep,ON,20,3)A=ON/OFF,default:ON ON: enable angle report feature; OFF: disable angle report feature.
B: Angle threshold, range:5-180 (degree);
C: Detection time range: 2-5 (second);
(default anglerep,ON,20,3)A=ON/OFF,default:ON ON: enable angle report feature; OFF: disable angle report feature.
B: Angle threshold, range:5-180 (degree);
C: Detection time range: 2-5 (second);
(default anglerep,ON,20,3)A=ON/OFF,default:ON ON: enable angle report feature; OFF: disable angle report feature.
B: Angle threshold, range:5-180 (degree);
C: Detection time range: 2-5 (second);
(default anglerep,ON,20,3)
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ANGLEREP#Query angle report setting.
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12Set the petrol/electricity controlRELAY,A#A=0/1; 0 means connection, 1 means cut off; default: 0.
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RELAY#Check the status of the control.
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13Set the fence alarmFENCE,B,0,D,E,F,X,M#circle area:
B=ON/OFF, open or close fence alarm, default: close;
D=the latitude of the circle center;
E=the longitude of the circle center;
F=1–9999, the fence radius, unit: 100 meters;
X=IN/OUT; IN: alarm is triggered when getting in the fence, OUT: alarm is triggered when getting out of the fence, blank means alarm is triggered when getting in or getting out of the fence, default: blank.
M=0/1; way of alarming, 0: GPRS only, 1: SMS+GPRS; default: 1circle area:
B=ON/OFF, open or close fence alarm, default: close;
D=the latitude of the circle center;
E=the longitude of the circle center;
F=1–9999, the fence radius, unit: 100 meters;
X=IN/OUT; IN: alarm is triggered when getting in the fence, OUT: alarm is triggered when getting out of the fence, blank means alarm is triggered when getting in or getting out of the fence, default: blank.
M=0/1; way of alarming, 0: GPRS only, 1: SMS+GPRS; default: 1circle area:
B=ON/OFF, open or close fence alarm, default: close;
D=the latitude of the circle center;
E=the longitude of the circle center;
F=1–9999, the fence radius, unit: 100 meters;
X=IN/OUT; IN: alarm is triggered when getting in the fence, OUT: alarm is triggered when getting out of the fence, blank means alarm is triggered when getting in or getting out of the fence, default: blank.
M=0/1; way of alarming, 0: GPRS only, 1: SMS+GPRS; default: 1
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FENCE,B,1,D,E,F,G,X,M#rectangle area:
B=ON/OFF, open or close fence alarm, default: close;
D=the latitude of position 1; range: -90–90 (degree);
E=the longitude of position 1; range: -180–180 (degree);
F=the latitude of position 2; range: -90–90 (degree);
G=the longitude of position 2; range: -180–180 (degree);
the latitude supports "N/S" or "+/- " coming before it's value;
the longitude supports "E/W" or "+/- " coming before it's value; rectangle area:
B=ON/OFF, open or close fence alarm, default: close;
D=the latitude of position 1; range: -90–90 (degree);
E=the longitude of position 1; range: -180–180 (degree);
F=the latitude of position 2; range: -90–90 (degree);
G=the longitude of position 2; range: -180–180 (degree);
the latitude supports "N/S" or "+/- " coming before it's value;
the longitude supports "E/W" or "+/- " coming before it's value; rectangle area:
B=ON/OFF, open or close fence alarm, default: close;
D=the latitude of position 1; range: -90–90 (degree);
E=the longitude of position 1; range: -180–180 (degree);
F=the latitude of position 2; range: -90–90 (degree);
G=the longitude of position 2; range: -180–180 (degree);
the latitude supports "N/S" or "+/- " coming before it's value;
the longitude supports "E/W" or "+/- " coming before it's value;
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FENCE#Check the parameters of the fence.
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14Set the vibration alarmSENALM,A,M#A=ON/OFF, default: OFF;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 2A=ON/OFF, default: OFF;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 2A=ON/OFF, default: OFF;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 2
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SENALM,OFF#Close vibration alarm.
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SENALM#Check the parameters of the alarm.
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15Set the power cut-off alarmPOWERALM, A,M,T1,T2#A=ON/OFF, default: ON;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 2
T1=2–60 (second), detecting time ,default: 5;
T2=1–3600 (second), The minimum time charging, default: 300; A=ON/OFF, default: ON;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 2
T1=2–60 (second), detecting time ,default: 5;
T2=1–3600 (second), The minimum time charging, default: 300; A=ON/OFF, default: ON;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 2
T1=2–60 (second), detecting time ,default: 5;
T2=1–3600 (second), The minimum time charging, default: 300;
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POWERALM, OFF#Close the power alarm.
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POWERALM#Check the parameters of the alarm.
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16Set the low battery alarmBATALM, A, M#A=ON/OFF, default: ON;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 1A=ON/OFF, default: ON;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 1A=ON/OFF, default: ON;
M=0/1/2/3, way of alarming, 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 1
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BATALM,OFF#Close the low battery alarm.
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BATALM#Check the parameters of the alarm.
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17Set the dialing timesCALL,N#N=1–3, default: 3, times to dial all SOS numbers;
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CALL#Check the parameters of the dialing.
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18Set the moving alarmMOVING,A,R,M#A=ON/OFF, default: OFF;
R=100–1000, moving radius, unit: meter, default: 300;
M=0–3, way of alarming; 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL,default: 1; A=ON/OFF, default: OFF;
R=100–1000, moving radius, unit: meter, default: 300;
M=0–3, way of alarming; 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL,default: 1;
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MOVING,OFF#Close the moving alarm.
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MOVING#Check the status and the parameters of the moving alarm.
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19Set the overspeed alarmSPEED,A,B,C,M#A=ON/OFF, open or close over speed alarm, default: OFF
B=5–600 (seconds), detection time range, default: 20 (second)
C=1–255 (km/h), speed limit, default: 100 (km/h);
M=0/1, way of alarm, 0: GPRS only, 1: SMS+GPRS, default: 1.A=ON/OFF, open or close over speed alarm, default: OFF
B=5–600 (seconds), detection time range, default: 20 (second)
C=1–255 (km/h), speed limit, default: 100 (km/h);
M=0/1, way of alarm, 0: GPRS only, 1: SMS+GPRS, default: 1.
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SPEED#Check the parameters of over speed.
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20Set the instruction passwordPWDSW,A#A= ON, enable the instruction password.
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PWDSW,password,B#The instruction password can be a combination of numbers and letters, which should be at least 1 character but no more than 19 characters; default: 000000;
B=OFF, disable the instruction password.The instruction password can be a combination of numbers and letters, which should be at least 1 character but no more than 19 characters; default: 000000;
B=OFF, disable the instruction password.
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21Revise the instruction passwordPASSWORD,A,B#A=old password, a combination of numbers and letters is supported, at least 1 character, no more than 19 characters, default: 000000;
B=new password, a combination of numbers and letters is supported, at least 1 character, no more than 19 characters.A=old password, a combination of numbers and letters is supported, at least 1 character, no more than 19 characters, default: 000000;
B=new password, a combination of numbers and letters is supported, at least 1 character, no more than 19 characters.
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22Mileage statisticsMILEAGE,A,B#A=ON/OFF, enable or disable mileage calculation, default: Off
B=0–999999, Mileage initial value, unit: km; default: 0 (mileage return to zero)A=ON/OFF, enable or disable mileage calculation, default: Off
B=0–999999, Mileage initial value, unit: km; default: 0 (mileage return to zero)
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MIELEAGE#Query current mileage.
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23Set the LEDs working modeLEDSW,A#A=ON/OFF, default: OFF
ON means LEDs always on;
OFF means LEDs will auto sleep while nothing abnormal.A=ON/OFF, default: OFF
ON means LEDs always on;
OFF means LEDs will auto sleep while nothing abnormal.
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LEDSW#Query LEDs working mdoe
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24Set ACC detection modeACC,A,M#A=ON/OFF
M=0/3/4 Ignition condition detection mode,
0 is line detection mode,
3 is virtual ACC detection mode. (External battery ADC+ vibration + speed)
4 is virtual ACC detection mode 2. (Vibration + speed)
Default ACC,ON,4

Noted: If switch is off, it means device will not detect the ACC status, it will keep off all the time.A=ON/OFF
M=0/3/4 Ignition condition detection mode,
0 is line detection mode,
3 is virtual ACC detection mode. (External battery ADC+ vibration + speed)
4 is virtual ACC detection mode 2. (Vibration + speed)
Default ACC,ON,4

Noted: If switch is off, it means device will not detect the ACC status, it will keep off all the time.
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ACC#Query ACC detection mode.
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25set warning of ACC status change ACCALM,M,A,B#M=ON/OFF, ACC status change alarm, default: Off
A= 0/1, 0: GPRS only, 1: SMS+GPRS, default: 1
B=5–60, ACC status detect time, unit: seconds, default: 10M=ON/OFF, ACC status change alarm, default: Off
A= 0/1, 0: GPRS only, 1: SMS+GPRS, default: 1
B=5–60, ACC status detect time, unit: seconds, default: 10
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ACCALM#Query ACC status changes alarm settings.
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26Setting LBS position updateLBSON, A,T1,T2#LBSON, A,T1,T2#
A = ON/OFF; default:OFF
T1= upload interval;10-3600 seconds, default 60 seconds;
T2=GPS non-positioning timeout (starting LBS transfer), 10-3600 seconds, default 60 seconds;
LBSON, OFF#
Turn off LBS point transfer function when GPS is not located;
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LBSON#Query instruction parameter
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27Query LBS locationLBS#Query LBS location.
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28Set the SMS forwardingFW,A,B#A=phone number, phone number to send;
B=SMS content, content to forward.
Only SOS can use this command.
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29SIM card swtich alarmSIMALM,A,M#A=ON/OFF, default: OFF
M=0/1/2/3, way of alarming; 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 0
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SIMALM#Check the parameters of the alarm.
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30Sharp accelerate/decelerate alarmSPEEDCHECK,A,M,T,ΔV1,ΔV2#A=ON/OFF, default: OFF
M=0/1/2, way of alarming; 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, default: 0
T= 1–30, detection time, default: 4;
ΔV1=10–300km/h, the change range of speed accelerating, default: 30 km/h
ΔV2=10–300km/h, the change range of speed decelerating, default: 50 km/h
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SPEEDCHECK#Check the status and the parameters of the alarm.
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31Sharp Turn alarmSWERVE,A,M,ΔC,V,T#A=ON/OFF, default: OFF
M=0/1/2, way of alarming; 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, default: 0
ΔC=10–180 degrees, the change range of the heading, default: 30 degree;
V=10–200 km/h, the speed, default: 60 km/h
T=1–30 seconds, detection time, default: 3 sec
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SWERVE#Check the status and the parameters of the alarm.
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32collide alarmcollide,A,M,N,T1,T2,V#
A=ON/OFF, default: OFF
M: Alarm reporting mode, 0 GPRS only, 1 SMS+GPRS;
N: Collision level, range 10-1024;
T1: The detection time starts after receiving the collision interrupt, and the range is 3-20 seconds.
T2: Detection time of the third stage, range of 10-90 seconds.
V: Determine the driving speed of the vehicle with a range of 5-30km /H.
Default: OFF,0,480, 10,90,5
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Collide#Query Collide alarm setting.
90
33rollover alarmROLLOVER,A,M,N,T#
A=ON/OFF, default: OFF
M: Alarm reporting mode, 0 GPRS only, 1 SMS+GPRS;
N: Threshold value of mean change, range 1-40, unit 0.1g (g represents gravity acceleration);
T: Continuous sampling time of triaxial data after effective collision alarm is generated, ranging from 1-90 seconds.
Default :ROLLOVER,OFF,0,15,20#
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ROLLOVER#Query Rollover alarm setting.
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34Remove alarmPULLALM,A,M,N,T#
A: Switch, ON/OFF;
M: Alarm reporting mode, 0 GPRS only, 1 SMS+GPRS;
N: Threshold value of mean change, range 1-40, (0.1g g represents gravity acceleration);
T: Time interval between the flip event and the power outage event, range 2-10 (second)
Default :PULLALM,OFF,0,30,5
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PULLALM#Query remove alarm setting.
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35External battery low alarmEXBATALM,A,M,N1,N2,T#A=ON/OFF, default: OFF
M=0/1/2/3, way of alarming; 0: GPRS only, 1: SMS+GPRS, 2: GPRS+SMS+phone call, 3: GPRS+CALL, default: 1
N1=10–360, N1/10=low volt threshold, default: 120
N2=10–360, N2/10=release alarm volt threshold, default: 130
T=1–300 (seconds), detection time, default: 10
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EXBATALM#Check the status and the parameters of the alarm.
96
36Whether to enable low external battery protectionEXBATCUT,A,M,N1,N2,T#A=ON/OFF, default: ON
M=0/1, way of alarming; 0: GPRS only, 1: GPRS+SMS; default: 1
N1=10–360; N1/10=the voltage threshold for cutting off Ext bat; default: 115
N2=10–360; N2/10=the voltage threshold for reconnecting to Ext bat; default: 130
T=1–300 (seconds); detection time; default: 10
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EXBATCUT,OFF#Disable low external battery protection.
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EXBATCUT#Check the status and the parameters of the Extbatcut.
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37A/D analog upload switch SettingADT,A,T#ADT,A,T#
A=ON/OFF, ON opens AD data upload, OFF closes AD data upload, and the default state is OFF;
T is the upload interval, 5~3600 seconds;The default is 600 seconds;
Close analog data upload, ADT,OFF#, default to OFF state;
100
ADT#Query ADC port setting.
101
38GPRS switch SettingsGPRSON,A#GPRSON, A#
A = ON/OFF; ON: open GPRS, OFF close GPRS; default :ON