# TK103 GPS Tracker
## Instructions for TK103 GPS tracker

All instructions sent to the GPS unit via SMS must be in lower case letters only. Instructions sent to the unit that are upper case, or start in upper case will be ignored by the unit. Instructions below are contained in quotation marks, quotation marks do not need to be sent and are simply to clarify what to send.
From the factory, the password to access the unit is 123456.

### Setting Master Number

Until a master number is added, the GPS unit will SMS reply with its GPS location to ANY number that calls it. To stop the unit replying to any number that calls it, a master number must be given to the unit. Instructions below show how to set the master number.
Ring the GPS unit from your cell phone and let it ring until the GPS unit picks the call up or the unit hangs up. Do this 10 times in a row, each time letting the unit pick the call up/hang up. While making these calls, the unit may SMS back with its GPS location, ignore these. After the 10th call, the GPS unit should SMS back something other than its GPS location. Depending on the manufacturer of the unit, it should SMS "add master OK", although, some units will just sent a blank message instead.

### Setting Admin Numbers

Admin numbers are secondary numbers that will also receive SMS alerts from the GPS unit. Admin numbers do not have to be added if not wanted. For admin numbers to access the GPS unit, the users will also need to know the GPS units password.
To add admin numbers, send message "admin 123456 XXXXXX". XXXXXX is the number you want to add as admin number. Up to 4 admin numbers may be added, all will be able to control the unit and will recive text notifications when the unit is in SMS mode. Only the master number should be used to add numbers to the unit.

### Setting password

Send message "password 123456 XXXXXX". XXXXXX is a new password of your choice. Password must be at least 6 characters and may be numbers or letters. If the password contains letters, they must all be lower case. Note that if the password is forgotten, the unit will need to be reset at the factory.

### SMS Commands

Below instructions assume XXXXX is the password
| Function | SMS Command and password | Units Response | Confirmation SMS |
| SMS Mode | sms xxxxxx | Unit will SMS location and notifications to admin number | sms ok! |
| GPRS Mode | gprs xxxxxx | Unit will show online its location and notifications | gprs ok! |
| monitor mode | monitor xxxxxx | Unit will activate microphone if called by an admin number | monitor ok! |
| Tracker Mode | tracker xxxxxx | Unit will SMS gps location if called by an admin number (unit must be in SMS mode) | tracker ok! |
| See Location | address xxxxxx | Unit will SMS address to admin number (unit must be in SMS mode) | |
| Shift alarm | move xxxxxx | Unit will send notification if unit moves | move ok! |
| Shift alarm | nomove xxxxxx | Cancels shift alarm | nomove ok! |
| Arm on | arm xxxxxx | Unit will send notification if door is opened or ACC is turned on | tracker is activated! |
| Arm off | disarm xxxxxx | Cancels arm | tracker is deactivated! |
| Check Status | check xxxxxx | Unit will SMS status of battery, power, doors, acc | |
| Time setting | time zone xxxxxx | will set Time of the gps in Reports | time ok! |
| Password change | password xxxxxx yyyyyyy | it will change the master password | password ok! |
| APN setting | Apn xxxxxx apn_name | setting Apn name of the com center for GPRS support | APN ok |
| Begin mode | Begin xxxxxx | start the system | begin ok! |
| Turn off Engine | stop xxxxxx | power off to turn engine off | Stop engine Succeed |
| Turn on Engine | resume xxxxxx | power back for engine to turn on | Resume engine Succeed |
| Returne IMEI | imei xxxxxx | return the amount of GPS imei for future use | |
| Less GPRS mode | Less gprs xxxxxx on/off | use gprs in hibrid mode | Less gprs on/off ok |