To ensure proper functionality, specially to avoid interference of the analogue line of 2N® EasyGate/SmartGate, proper grounding is needed. You can complete it through a left pin in the SMS input (Pic. 1) for new models of 2N® EasyGate PRO and 2N® SmartGate UMTS.
In case of an old version 2N® EasyGate/SmartGate use right pin in the SMS input!
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