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GSM-SA stand-alone modem provides the following functions:
activate relay by a call (free of charge, call is denied)
activate relay by a message
call predefined number when condition is met
send alarm message to predefined number when condition is met
read analog/binary inputs by a message
authorize users and read status by a message
Hardware:
- internal GSM antenna
- connector for external antenna (SMA type), automatic switch
- 4 analog/digital inputs, 2 relay outputs
Before inserting SIM card, make sure PIN is deactivated. To do so, enter SIM card into your phone, open
Settings, Security, PIN code request, and set to off. Turn phone off, remove SIM and put to GSM-1 module.
The similar procedure may be used to renew prepaid account.
To insert SIM card, use small screwdriver to lift cover, insert card, then gently push cover back until you hear
click.
When using on remote locations, where GSM signal is weak, it is recommended to use external antenna. If
multi-band antenna is not enough, better results may be obtained with directional yagi, lifted few meters on a
pole. Look for 12dB gain or more, and take care to find the best orientation.
