Installation manual

Duet2 D2600 / Duet3 D2650 Installation Manual – EU-D2600-D2650-INST/A10/v1  - 12 
Notes (Contact ID Format): 
1.  The 4, 5 or 6 digit account number, the Contact ID identifier '18' and the Alarm/Restore 
digit ('1' or '3') will precede these codes. 
2.  The checksum will be calculated and appended to the data. 
7.4.3.3 For SIA Format
 the string should contain 2-letter SIA event code, plus any partition, 
zone or user information, up to a maximum of 8 characters. The SIA restore letters are 
programmed into another column. 
Examples: 
Message SIA data Restore 
Test Call Manual  RX   
Test Call Periodic (Auto)  RP   
PSTN Line Fail  LT1  LR 
GSM Line Fail  LT2  LR 
Input 1  BA01  BR 
Input 2  TA01  TR 
Input 3  BA03  BR 
Input 4  BA04  BR 
Notes (SIA Format)
: 
For the SIA restore message, the 2 characters in the Restore column will replace the first 2 
characters in the data column to produce the new string. The remaining 6 characters in the 
data column will be unchanged. 
8.  FLT Output Relay 
The FLT relay contacts, C, NO and NC are used to provide a ‘fault’ output. 
Both the wired and radio paths are continuously monitored. Should both wired and radio paths fail 
simultaneously, then the FLT relay will energise and the contact will change over. 
Where only one path has been enabled and this fails, then the FLT relay will energise and the contact 
will change-over. 
9. SMS Output Control 
Four open collector outputs may be controlled remotely using SMS. See page 15 for connection and 
commands. 
Note: For SMS Command table, see Appendix 2. 
10.  Ringing on PSTN 
If incoming ringing is detected on the PSTN line, the Duet will switch the alarm control panel over to 
the PSTN line and continue monitoring for the alarm control panel off-hook condition. 
When alarm control panel off-hook is detected, the Duet will operate the Line Divert relay to isolate 
any associated phones while the panel is in download mode. As soon as the alarm control panel on-
hook is detected, the Line Divert relay will be released and normal operation of the Duet will continue. 
11.  Ringing on GSM 
When incoming ringing is detected on the GSM path, the Duet will answer the call and go into 
‘Download’ mode. This will allow remote programming / interrogation of the Duet. See the D2454 
Programmer Manual for details. It is also possible to request the Duet to call the D0154 Remote 
Server via GPRS for the purposes of remote programming (D0154 is a stand-alone computer program 
available from Dycon). 










