4.3.3 LED indicators........................................................................................ 33
4.3.3.1 Modem (red LED) ..................................................................... 33
4.3.3.2 CPU (green LED) ...................................................................... 33
4.3.3.3 GPS (blue LED) ......................................................................... 34
4.3.4 External battery ..................................................................................... 34
4.3.5 Grounding terminal ............................................................................... 35
4.3.6 Modem ................................................................................................... 35
4.3.7 GPS ......................................................................................................... 35
4.3.8 RTC ......................................................................................................... 36
4.3.9 TCP connector ....................................................................................... 36
4.3.10 MMC card slot ........................................................................................ 36
4.3.11 SIM card slot .......................................................................................... 37
4.4 Logger terminals ............................................................................................... 37
4.5 Alarms and actuators ........................................................................................ 44
4.6 Atlas desktop software ..................................................................................... 45
4.6.1 Atlas Free ............................................................................................... 45
4.6.2 Atlas Professional .................................................................................. 45
4.6.3 Atlas Enterprise ..................................................................................... 46
5 Technical specifications ......................................................................... 46
5.1 Operation conditions ........................................................................................ 46
5.2 Absolute maximum ratings ............................................................................... 46
5.3 Technical specifications: outputs ..................................................................... 48