Digital Security Controls Ltd. 163G4005 ユーザーズマニュアル

This LED is normally OFF. It indicates malfunctioning by flashing in the event of trouble. On power-up, the Communicator checks for
certain trouble conditions to be met shown in the Table 7 below. The most significant malfunctioning status will be indicated, with
the corresponding number of flashes of the RED LED: see the Table 7 below for number of flashes and malfunctioning indication
priority.

Slow Flashing Slow Flashing Device initialization: the LEDs flash until a GSM signal is received by the Communicator.
Fast Flashing OFF

Incoming SMS: the LED flashes a few seconds.

Slow Flashing OFF

Remote Session: the LED may flashes a few seconds after the end of session.

OFF

Slow Flashing Voice call: it signals the voice calls of the Communicator NOT those of connected control 

panel, if any.

Table 6: Communication Type.

1 (HIGH) Firmware problem (incorrect firmware): invalid data found in an external flash memory.

1

2

Power supply trouble: the supply voltage drops below 10.7 V.

2

3

Battery trouble: the battery voltage drops below 3.4 V.

3

4

Default PIN: the EN50136 option is enabled and User, Installer or Level 4 PIN are at default.

4

5

GSM radio fault: the microcontroller is not able to communicate with GSM radio module, during the ini-
tialization sequence.

5

6

SIM trouble: the SIM card has the PIN check enabled.

6

7

GSM Network trouble: the radio is not able to connect to the GSM network.

7

8 (LOW)

GPRS/HSPA trouble: the radio is not able to connect to the GPRS/HSPA network.

8

Table 7: Fault LED.