2 GPRS-A
SATEL
Fig. 1. GPRS-A module.
antenna connector (the antenna is delivered with the module).
SIM card slot.
Inserting the SIM card into its slot before programming the card PIN code in the
module is not recommended (if the card requires entering the PIN code).
APS connector for a SATEL power supply unit (e.g. APS-612).
LEDs indicating the module status.
RS-232 (TTL) port.
information on how to install the SIM card.
Description of terminals
+12V
– power input (12 V DC ±15%).
COM
–
common
ground.
RING, TIP
– terminals for connecting the control panel telephone communicator.
S1…S3
– 1-Wire bus (1-Wire digital temperature sensors can be connected to the bus):
S1
– common ground,
S2
– data,
S3
– power supply.
I1…I8
– inputs. They can be programmed as digital (NC or NO type) or analog ones.
O1...O2
– OC type outputs (shorted to common ground when in active state).
O3...O4
– NO type relay outputs (normally open).
AC
– input for supervision of AC voltage presence.
1.2.1 Antenna
The GPRS-A module is delivered with an antenna. The antenna can be replaced with
another antenna mounted on the enclosure or at some distance from it.
Using the antenna mounted at some distance from the enclosure is recommended wherever
thick masonry walls, metal partitions etc. may decrease the range of radio signal at the
module installation place.
