2N SmartGate - User Manual - Manual (Page 10)

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2.6. Power Supply Connection
SmartGate is powered with 10-16V DC. Where a source other than the included power
supply adapter is used, the voltage range and polarity shown on the SmartGate power
supply connector have to be maintained. For backup power supply you can use
EnergyBank – backup source with accumulators.
Do not power on the supply until the antenna is connected to SmartGate to avoid the
GSM module damage.
2.7. SMS Sending Input Connection
You have got a special connector for easy connection to SmartGate. The connector
is equipped with screwing clamps to connect wires from a switching contact (device to
be monitored). The other connector end can be connected to the respective SmartGate
panel connector.
The input is designed for the contact of relay connected between the input pins. The
input is activated by contact closing (pin interconnection).
A transistor switch or logic signal can be used too. The pin near the telephone line
connector is connected to GND of the device the second one is active. Please, respect
the loop current polarity. There is over-voltage protection up to +12V DC there.
2.8. PC Connection
You have got a serial cable for PC connection. It is a modem cable where all of the 9
pins are 1:1 interconnected – in case you want to use another cable.
If you use a longer cable, make sure it works properly. There may occur errors at higher
transmission rates.