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Fast Q&A and Troubleshooting
1. How to Reset the Device:
Short the RST to GND, and then send the SMS command “ RESET ”.After RESET, it will empty
all the SMS alarm and phone call alarm phone numbers in the memory and also device will be in
the Only SMS alarm report Mode (M1 mode)
2. What is the uses of the RST line input
RST line is used to program the device or RESET the device.
Before SMS programming the device,Short the RST to GND, and then start to send the SMS
command to program
After programming the device,RST line should be disconnected from GND to protect the device
3. Why the GSM LED always flash quickly?
(1) SIM card in the device must support the GSM (2G) net
(2) Try to push the SIM card out and push it into the slot to test again
(3) Try to change another SIM card from other SIM card provider to test again
(4) If you still cann’t sort the problems ,then please contact the seller for service
4. Why the MCU LED always kept ON even wait more than 70 seconds ?
That means device didn’t recognize the SIM card properly or no SIM card inside.then you can try to
push the SIM card out and push it into the slot to test again and wait around 70 seconds.If MCU
LED still cannot start to flash,then please change another SIM card to try again
5. If one alarm input is exsit and another alarm input is triggered,then what will happen?
Device will send the Combined SMS alarm text
6. What is the maximum lengh of the alarm SMS text
The maximum text length is 10 characters
7. How to simply disable the alarm input and go to Disarm temporarily?
Use the Alarm phone number to call the device number and hang up after one or two ring back
tone,then alarm will be disabled for 10 minute. Keep the ring until the device reject your
calling,then alarm will be disabled for 60 minutes.
How to get the fast service from supplier?
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