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GSM Modem

GSM modem is designed for monitoring and controlling different kinds of devices.
Modem comprise 3 (optionally 4) serial port, 2 digital inputs and one digital output. Two serial ports are RS485, and one (optionally 2) RS232. RS485 ports are galvanically isolated both from each other and from the other parts of modem. RS232 ports are not galvanically isolated. The way of communication between modem and connected devices can be adapted to user needs.
Digital inputs have optocouplers so they are galvanically isolated. Digital output has relay, so it is also galvanically isolated.
Data transfer between modem and remote monitoring center is through GSM data call or through SMS messages (optionally GPRS). Modem firmware can be remotely upgraded.
GSM modem can optionally be equipped with Ethernet port and/or GPS.
Software for monitoring is installed on remote PC equipped with an GSM modem.
Monitoring software provides connection to remote modem, data transfer between PC, modem and devices connected to modem, and control of those devices.
Monitoring software works under Windows and Linux operating systems.





GSM Modem


Power supply 9Vdc – 36Vdc, 2A
Frequency ranges 900/1800/1900MHz
Transmiter peak power (nominal) +33 ± 2dBm @ 900MHz,
  +30 ± 2dBm @ 1800/1900MHz
Receiver sensitivity < -102dBm
Modes of operation data, SMS, (GPRS optionally)
Data transfer rate 9600kbit/s
Number of RS485 ports 2
Number of RS232 ports 1 (option: 2)
Number of digital inputs 2
Number of digital outputs 1
RS485 ports insulation 1500Vac
Digital inputs and output insulation 1500Vac
Relay contacts voltage rating 75V
Relay contacts current rating 1A
Ethernet option
GPS option