- Note:please insert into GSM Sim Card before battery charging. since the place of units limit, the wall plug with built in a small battery,its capacity is very small, its Working time is very short, we suggest that the GSM units is powered continually by AC Power Source
- Starting: Insert SIM card according to the indicating direction, the product will automatically switch on the red light with shining four times, then enter standby state in 30 seconds.
- 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 )
- GPRS positioning query: Use the mobile phone to send the text message to the alarm locator, the machine will reply a link of location . Open this link to appear the location map and text address instructions to get more accurate location.
- Callback by voice: Use the mobile phone to send the text message to the alarm locator, the machine will reply a text message;
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