2.5 SMS Sending Input Connection

You have got a special connector for easy connection to SmartGate UMTS. 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 2N^® SmartGate UMTS 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.