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6
LED Indication
6.1 Charging LED
Charging status is indicated by a red LED as follows:
1. Red LED On
• Charging of Li-ion battery is in progress.
2. Red LED Off
• Charging of Li-ion battery is completed.
6.2 GSM LED
GSM status is indicated by a green LED as follows:
1. Green LED Blinking
• Fast Blink (600 ms on / 600ms off)
No SIM card inserted or network search in progress.
• Slow Blink (75 ms on / 3 s off)
Registered to the GSM network.
2. Green LED Off
• GSM module is in sleep or power down mode.
6.3 GPS LED
GPS status is indicated by a yellow LED as follows:
1. Yellow LED On
• GPS position is fixed, ready for tracking.
2. Yellow LED Off
• GPS position is not fixed, not ready for tracking.
Confidential
DAVISCOMMS (S) PTE LTD
MTD2000 AT Command Guide R12
18 /105
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