Chap. 2: Installation & Wiring
21
Figure 18. KLT/KLR500 connection diagram
2.13 GSM add-on, GSM501
The GSM add-on is used for transmitting reports and notifications from the FORCE to the CMS
and the contacts, via cellular network. It is a Quad-band transceiver. An external antenna
(long/short) can be used with the GSM501.
2.13.1 Main features
4 bands: 850/900/1800/1900 MHz
Current consumption: 30mA in idle state, 200mA when broadcasting.
Antenna connection type: SMA
The GSM add-on requires a SIM card, which should be purchased separately.
2.13.2 The LEDs
The GSM module has 2 LEDs: network registration and voltage. The LEDs states are:
Network
Registration
(Red)
Flashes once every 3 sec.
Flashes once every 1 sec.
SIM missing or power loss