Features:
This tracker can find the location on the map of the mobile phone
This product does not require any other platform, the user can use it for lifelong free of charge. Just sending a message to the alarm locator, the user can reply the below address information + map, operation is very simple, settling a matter at one go.
Strong signal, reliable and stable performance
Whether the alarm locator is placed on the cart or in a child bag, or in the pocket of an old man, the user can send SMS to the alarm locator through the mobile phone, to inquire the alarm locator location, which will help you to make a whole-process monitor, to master the location of the object real time.
Warning: SIM card must be inserted when charging.
 How to use (just for reference):
1. Preparation: a SIM card 
2. Starting: insert SIM card after opening the card cover according to the indicating direction, then insert the mini memory card, the product will automatically switch on the red light with shining four times, then enter standby state in 30 seconds.
3. Binding the master number: Use the mobile phone to send the text message 000 to the alarm locator, the machine will reply a text message; Set; Binding + the master number.
4. Recording alone: Use the mobile phone to send the text message 555 to the alarm locator, the machine will reply a text message; [Send; recording is starting].
5. Callback by voice: Use the mobile phone to send the text message 666 to the alarm locator, the machine will reply a text message; [DT; voice monitoring and warning callback have been set successfully].
When the sound around the alarm locator is more than 40 db, the alarm locator will automatically call the set phone number.
6. GPRS positioning query: Use the mobile phone to send the text message 777 to the alarm locator, the machine will reply a link of location and Google map. Open this link to appear the location map and text address instructions to get more accurate location.
7. Callback by voice: Use the mobile phone to send the text message 888 to the alarm locator, the machine will reply a text message; [the main machine's all features, such as On/Off, battery, binding number, signal strength, frequency startup, GPRS TF card capacity, etc].
8. Restart the main machine: Use the mobile phone to send the text message 999 to the alarm locator, then wait for 1 min to restore normally.
9. Delete the content of the memory card: Use the mobile phone to send the text message 445 to the alarm locator, the machine will reply a text message; [TF, deletion is successful, it has capacity].
10. Close function: Use the mobile phone to send the text message 444 to the alarm locator, the machine will reply a text message; [Reset; all tasks are cancelled].
11. Voice query around the product: directly dial the card number in the alarm locator, then hear the sound around the alarm locator after a few seconds (the alarm locator doesn't make any sound and light in the process of query) 
12. Indicator: ON light will be off after it becomes light for 4 times, low battery indicator will flash quickly.