2N Analogue UMTS gateway 2N SmartGate UMTS - Manual, 1699 v1.1.0 - Manual (Page 62)

SMS Sending Input 4.2
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4.2 SMS Sending Input
This universal input is intended especially for reporting alarm or error statuses of
any equipment provided with the appropriate contact (a relay contact, e.g.).
By activating this input (electric input pin interconnection) you send one SMS to
one pre-programmed telephone number.
Caution
n Do not use in life-supporting or property-protection applications because
of the character of SMS service and 2N® SmartGate UMTS equipment.
The manufacturer shall not be liable for health and property damage
incurred as a result of SMS sending failure.