Operator`s manual
4 
Main Features 
The SD2 provides a means of communicating alarm information from a 
control panel to either a standard or a mobile telephone. The unit normally 
connects to an alarm control panel, which provides the necessary power 
and battery back up. 
Triggers: 
The SD2 has four trigger inputs. You can assign a voice message and/or a 
text message to each input. The unit can also send a message/or a text 
message when the triggers have been restored. 
For most applications you may connect the trigger inputs to an alarm 
control panel's communicator outputs or bell output. You can also connect 
other devices, such as smoke detectors or temperature sensors, directly to 
the trigger inputs. The unit allows you to program the polarity of the 
trigger inputs as either positive or negative applied/removed. 
Contacts: 
The SD2 will store up to 10 contacts: you can assign each one a name, 
telephone number, message type, and acknowledgement type. 
DO NOT use the SD2 to call the Police via the Emergency Services phone 
numbers. 
Voice Messages: 
The SD2 has a built-in microphone and speaker to allow you to record and 
replay audio messages directly from the unit. 
The SD2 can store up to four separate alarm messages, four restore alarm 
messages (a different message can be sent when the trigger event has 
been removed) and one common message (normally used to store the 
name and address of the premises). Each message can be up to 30 
seconds in length. Voice Messages A and Voice Restore Message A are 
related to trigger input 1; Voice Messages B and Voice Restore Message B 
are related to trigger input 2 and so on. 
Make sure that you record voice messages that reflect the type of alarm 
that is connected to the trigger input. For example, if you connect input 1 
to the fire output of an alarm/fire control panel then make sure that 
Message 1 states that there is a fire alarm at the premises. 










