EIS-1, EIS-2, EIS-4
USER MANUAL
Page 8
5
LED INDICATION
Blue LED (LED1)
-
Indicates the level of the GSM signal from 1 to 5 LED flashes (1 is weak signal, 5 is
excellent signal)
Red LED (LED2)
-
GSM module Activity
Yellow LED (LED3)
-
Short flashing indicates that the GSM module is ON, but it is not yet connected on the GSM
network. After connection, yellow led is flashing with short pulse (1/2 s) ON and a long
pulse OFF (5s).
