Meitrack Trackids User Guide
Copyright © 2015 Meitrack Group All rights reserved. - 11 -
Note: The default password of the tracker is 0000. The password can be changed by using Meitrack Manager or SMS commands.
After the password is changed successfully by using an SMS command, only the authorized phone number can receive SMS
reports. The common format of an SMS command is: Password,Command,Parameter.
7.2 SOS – A71
This command is used to set SOS phone numbers. When you dial a phone number, an SMS report about the location and other
funcitons will be received.
SMS text:
0000,A71,Phone number 1,Phone number 2,Phone number 3
Send the text to the embedded SIM card phone number.
Tip: “,” should be an English comma and no space exists before and after the comma.
The device will automatically reply the SMS: IMEI,A71,OK. It indiates that the SOS phone number is set successfully.
Note:
Phone number: Contains a maximum of 16 bytes. If no phone numbers are set, leave them blank. Phone numbers are empty by
default.
Phone number 1: Set the phone number to the SOS phone number. When you call the tracker by using the phone number, the
tracker will reply an SMS with the location and send geo-fence alarms and low power alarms.
Phone number 2/3: When you call the tracker, the tracker replies an SMS with location information.
When you press the SOS button, the device will dial three authorized phone numbers in sequence. It will stop dialing
when one phone number answers. Then the two-way calling is implemented. After hanging up, the tracker will send
alarm information to phone numbers.
When you call the device by using a preset phone number, the device will automatically answer by default and implement
two-way calling.
Note: The phone numbers are blank by default. The phone numbers that are set must be separated by comma (“,”) to avoid
setting failures. No comma is required next to the last phone number. For example:
0000,A71,13500000000,,
0000,A71,13500000000,13600000000,
0000,A71,13500000000,13600000000,13700000000
Reply: 353358017784062,A71,OK
To clear all phone numbers, send 0000,A71,,,.