Table of Contents
This is a complete reference of SIA DC-09 event codes and their Contact ID equivalents supported by TetherX. These codes are used by alarm panels and IP communicators when reporting events via Alarm Signal Receiving.
Tip: Event codes are two-letter identifiers embedded in SIA messages. For example, BA indicates a burglary alarm and PA indicates a panic alarm. SIA Decoding shows where the code sits in a message, which codes raise an alarm, and the Contact ID event each one maps from.
Burglary Events
| Code |
Name |
Description |
| BA |
Burglary alarm |
Burglary zone has been violated while armed |
| BB |
Burglary bypass |
Burglary zone has been bypassed |
| BC |
Burglary cancel |
Alarm has been cancelled |
| BH |
Burglary alarm restore |
Alarm condition eliminated |
| BJ |
Burglary trouble restore |
Trouble condition eliminated |
| BR |
Burglary restoral |
Alarm/trouble condition eliminated |
| BS |
Burglary supervisory |
Unsafe intrusion detection system condition |
| BT |
Burglary trouble |
Burglary zone trouble condition |
| BU |
Burglary unbypass |
Zone bypass has been removed |
| BV |
Burglary verified |
More than 3 burglary zones have been triggered |
| BX |
Burglary test |
Burglary zone activated during testing |
Fire Events
| Code |
Name |
Description |
| FA |
Fire alarm |
Fire condition detected |
| FB |
Fire bypass |
Zone has been bypassed |
| FH |
Fire alarm restore |
Alarm condition eliminated |
| FI |
Fire test begin |
The transmitter area's fire test has begun |
| FJ |
Fire trouble restore |
Trouble condition eliminated |
| FK |
Fire test end |
The transmitter area's fire test has ended |
| FR |
Fire restoral |
Alarm/trouble condition has been eliminated |
| FS |
Fire supervisory |
Unsafe fire detection system condition |
| FT |
Fire trouble |
Zone disabled by fault |
| FU |
Fire unbypass |
Bypass has been removed |
| FX |
Fire test |
Fire zone activated during test |
| FY |
Missing fire trouble |
A fire point is now logically missing |
Panic & Hold-up Events
| Code |
Name |
Description |
| PA |
Panic alarm |
Emergency assistance request, manually activated |
| PB |
Panic bypass |
Panic zone has been bypassed |
| PH |
Panic alarm restore |
Alarm condition eliminated |
| PJ |
Panic trouble restore |
Trouble condition eliminated |
| PR |
Panic restoral |
Alarm/trouble condition has been eliminated |
| PS |
Panic supervisory |
Unsafe system condition exists |
| PT |
Panic trouble |
Zone disabled by fault |
| PU |
Panic unbypass |
Panic zone bypass has been removed |
| HA |
Hold-up alarm |
Silent alarm, user under duress |
| HB |
Hold-up bypass |
Zone has been bypassed |
| HH |
Hold-up alarm restore |
Alarm condition eliminated |
| HJ |
Hold-up trouble restore |
Trouble condition eliminated |
| HR |
Hold-up restoral |
Alarm/trouble condition eliminated |
| HS |
Hold-up supervisory |
Unsafe holdup system condition |
| HT |
Hold-up trouble |
Zone disabled by default |
| HU |
Hold-up unbypass |
Bypass has been removed |
Medical & Emergency Events
| Code |
Name |
Description |
| MA |
Medical alarm |
Emergency assistance request |
| MB |
Medical bypass |
Zone has been bypassed |
| MH |
Medical alarm restore |
Alarm condition eliminated |
| MJ |
Medical trouble restore |
Trouble condition eliminated |
| MR |
Medical restoral |
Alarm/trouble condition has been eliminated |
| MS |
Medical supervisory |
Unsafe system condition exists |
| MT |
Medical trouble |
Zone disabled by fault |
| MU |
Medical unbypass |
Bypass has been removed |
| QA |
Emergency alarm |
Emergency assistance request |
| QB |
Emergency bypass |
Zone has been bypassed |
| QH |
Emergency alarm restore |
Alarm condition has been eliminated |
| QJ |
Emergency trouble restore |
Trouble condition has been eliminated |
| QR |
Emergency restoral |
Alarm/trouble condition has been eliminated |
| QS |
Emergency supervisory |
Unsafe system condition exists |
| QT |
Emergency trouble |
Zone disabled by fault |
| QU |
Emergency unbypass |
Bypass has been removed |
| NA |
No activity |
There has been no activity for a programmed amount of time |
Open/Close Events
| Code |
Name |
Description |
| CA |
Automatic closing |
System armed automatically |
| CE |
Closing extend |
Extend closing time |
| CF |
Forced closing |
System armed, some zones not ready |
| CG |
Close area |
System has been partially armed |
| CI |
Fail to close |
An area has not been armed at the end of the closing window |
| CJ |
Late close |
An area was armed after the closing window |
| CK |
Early close |
An area was armed before the closing window |
| CL |
Closing report |
System armed normal |
| CP |
Automatic closing |
System armed automatically |
| CR |
Recent closing |
An alarm occurred within five minutes after the system was closed |
| CS |
Closing keyswitch |
Account has been armed by keyswitch |
| CT |
Late to open |
System was not disarmed on time |
| CW |
Was force armed |
Header for a force armed session |
| CZ |
Point closing |
A point, as opposed to a whole area or account, has closed |
| OA |
Automatic opening |
System has disarmed automatically |
| OC |
Cancel report |
Untyped zone cancel |
| OG |
Open area |
System has been partially disarmed |
| OI |
Fail to open |
An area has not been armed at the end of the opening window |
| OJ |
Late open |
An area was disarmed after the opening window |
| OK |
Early open |
An area was disarmed before the opening window |
| OP |
Opening report |
Account was disarmed |
| OR |
Disarm from alarm |
Account in alarm was reset/disarmed |
| OS |
Opening keyswitch |
Account has been disarmed by keyswitch |
| OT |
Late to close |
System was not armed on time |
| OZ |
Point opening |
A point, rather than a full area or account, disarmed |
| NF |
Forced perimeter arm |
Some zones/points not ready |
| NL |
Perimeter armed |
An area has been perimeter armed |
| EA |
Exit alarm |
An exit zone remained violated at the end of the exit delay period |
| EE |
Exit error |
An exit zone remained violated at the end of the exit delay period |
Access Control Events
| Code |
Name |
Description |
| DC |
Access closed |
Access to all users prohibited |
| DD |
Access denied |
Access denied, unknown code |
| DF |
Door forced |
Door opened without access request |
| DG |
Access granted |
Door access granted |
| DK |
Access lockout |
Access denied, known code |
| DO |
Access open |
Access to authorised users allowed |
| DR |
Door restoral |
Access alarm/trouble condition eliminated |
| DS |
Door station |
Identifies door for next report |
| DT |
Access trouble |
Access system trouble |
Environmental Events
| Code |
Name |
Description |
| GA |
Gas alarm |
Gas alarm condition detected |
| GB |
Gas bypass |
Zone has been bypassed |
| GH |
Gas alarm restore |
Alarm condition eliminated |
| GJ |
Gas trouble restore |
Trouble condition eliminated |
| GR |
Gas restoral |
Alarm/trouble condition has been eliminated |
| GS |
Gas supervisory |
Unsafe gas detection system condition |
| GT |
Gas trouble |
Zone disabled by fault |
| GU |
Gas unbypass |
Bypass has been removed |
| GX |
Gas test |
Gas zone activated during test |
| KA |
Heat alarm |
High temperature detected on premise |
| KB |
Heat bypass |
Zone has been bypassed |
| KH |
Heat alarm restore |
Alarm condition eliminated |
| KJ |
Heat trouble restore |
Trouble condition eliminated |
| KR |
Heat restoral |
Alarm/trouble condition has been eliminated |
| KS |
Heat supervisory |
Unsafe heat detection system condition |
| KT |
Heat trouble |
Zone disabled by fault |
| KU |
Heat unbypass |
Bypass has been removed |
| WA |
Water alarm |
Water detected at protected premise |
| WB |
Water bypass |
Water detection has been bypassed |
| WH |
Water alarm restore |
Alarm condition eliminated |
| WJ |
Water trouble restore |
Trouble condition eliminated |
| WR |
Water restoral |
Alarm/trouble condition has been eliminated |
| WS |
Water supervisory |
Unsafe water detection system condition |
| WT |
Water trouble |
Zone disabled by fault |
| WU |
Water unbypass |
Water detection bypass has been removed |
| ZA |
Freeze alarm |
Low temperature detected at premise |
| ZB |
Freeze bypass |
Low temperature detection has been bypassed |
| ZH |
Freeze alarm restore |
Alarm condition eliminated |
| ZJ |
Freeze trouble restore |
Trouble condition eliminated |
| ZR |
Freeze restoral |
Alarm/trouble condition has been eliminated |
| ZS |
Freeze supervisory |
Unsafe freeze detection system condition |
| ZT |
Freeze trouble |
Zone disabled by fault |
| ZU |
Freeze unbypass |
Low temperature detection bypass removed |
| SA |
Sprinkler alarm |
Sprinkler flow condition exists |
| SB |
Sprinkler bypass |
Sprinkler zone has been bypassed |
| SH |
Sprinkler alarm restore |
Alarm condition eliminated |
| SJ |
Sprinkler trouble restore |
Trouble condition eliminated |
| SR |
Sprinkler restoral |
Alarm/trouble condition has been eliminated |
| SS |
Sprinkler supervisory |
Unsafe sprinkler system condition |
| ST |
Sprinkler trouble |
Zone disabled by fault |
| SU |
Sprinkler unbypass |
Sprinkler zone bypass has been removed |
Power & System Events
| Code |
Name |
Description |
| AR |
AC restoral |
AC power has been restored |
| AT |
AC trouble |
AC power has failed |
| YP |
Power supply trouble |
The transmitter/receiver has a problem with the power supply |
| YQ |
Power supply restored |
The transmitter/receiver's power supply has been restored |
| YR |
System battery restoral |
Low battery has been corrected |
| YT |
System battery trouble |
Low battery in control/communicator |
| YM |
System battery missing |
The transmitter/receiver battery is missing |
| RR |
Power up |
System lost power, is now restored |
| XT |
Transmitter battery trouble |
Low battery in wireless transmitter |
| XR |
Transmitter battery restoral |
Low battery has been corrected |
Tamper Events
| Code |
Name |
Description |
| TA |
Tamper alarm |
Alarm equipment enclosure opened |
| TB |
Tamper bypass |
Tamper detection has been bypassed |
| TR |
Tamper restoral |
Alarm equipment enclosure has been closed |
| TU |
Tamper unbypass |
Tamper detection bypass has been removed |
| JA |
User code tamper |
Too many unsuccessful attempts to enter a user ID |
Communication Events
| Code |
Name |
Description |
| LR |
Phone line restoral |
Phone line restored to service |
| LT |
Phone line trouble |
Phone line report |
| RP |
Automatic test |
Automatic communication test report |
| RX |
Manual test |
Manual communication test report |
| TX |
Test report |
An unspecified communicator test |
| TE |
Test end |
Communicator restored to operation |
| TS |
Test start |
Communicator taken out of operation |
| RT |
Data lost |
Dialer data lost, transmission error |
| YC |
Communications fail |
Receiver and transmitter |
| YK |
Communications restoral |
The transmitter has resumed communication with a receiver |
| YS |
Communications trouble |
Receiver and transmitter |
| YN |
Invalid report |
The transmitter has sent a packet with invalid data |
Programming & System Events
| Code |
Name |
Description |
| LB |
Local program |
Begin local programming |
| LD |
Local program denied |
Access code incorrect |
| LS |
Local program success |
Local programming successful |
| LU |
Local program fail |
Local programming unsuccessful |
| LX |
Local programming ended |
A local programming session has been terminated |
| RB |
Remote program begin |
Remote programming session initiated |
| RD |
Remote program denied |
Access passcode incorrect |
| RN |
Remote reset |
A transmitter was reset via a remote programmer |
| RS |
Remote program success |
Remote programming successful |
| RU |
Remote program fail |
Remote programming unsuccessful |
| RA |
Remote programmer call failed |
Transmitter failed to communicate with the remote programmer |
| JD |
Date changed |
The date was changed in the transmitter/receiver |
| JT |
Time changed |
The time was changed in the transmitter/receiver |
| JH |
Holiday changed |
The transmitter's holiday schedule has been changed |
| JS |
Schedule changed |
An automatic schedule was changed |
| JR |
Schedule executed |
An automatic scheduled event was executed |
| JV |
User code changed |
A user's code has been changed |
| JX |
User code deleted |
A user's code has been removed |
| JL |
Log threshold |
The transmitter's log memory has reached its threshold level |
| JO |
Log overflow |
The transmitter's log memory has overflowed |
| YG |
Parameter changed |
A transmitter's parameters have been changed |
| YF |
Parameter checksum fail |
System data corrupted |
| YW |
Watchdog reset |
The transmitter created an internal reset |
| YX |
Service required |
A transmitter/receiver needs service |
| YZ |
Service completed |
Required transmitter/receiver service completed |
| YY |
Status report |
This is a header for an account status report transmission |
Expansion & Equipment Events
| Code |
Name |
Description |
| ER |
Expansion restoral |
Expansion device trouble eliminated |
| ET |
Expansion trouble |
Expansion device trouble |
| RC |
Relay close |
The relay specified in the address field has energised |
| RO |
Relay open |
The relay specified in the address field has de-energised |
| XI |
Sensor reset |
A user has reset a sensor |
| XE |
Extra point |
The panel has sensed an extra point not specified for this site |
| XF |
Extra RF point |
The panel has sensed an extra RF point not specified for this site |
| XW |
Forced point |
A point was forced out of the system at arm time |
| LF |
Listen-in begin |
The listen-in session with the receiver has begun |
| LE |
Listen-in ended |
The listen-in session has been terminated |
| DU |
Dealer ID |
Zone description gives dealer ID number |
Untyped & Miscellaneous Events
| Code |
Name |
Description |
| UA |
Untyped zone alarm |
Alarm condition from zone of unknown type |
| UB |
Untyped zone bypass |
Zone of unknown type has been bypassed |
| UH |
Untyped alarm restore |
Alarm condition eliminated |
| UJ |
Untyped trouble restore |
Trouble condition eliminated |
| UR |
Untyped zone restoral |
Alarm/trouble condition eliminated from zone of unknown type |
| US |
Untyped zone supervisory |
Unsafe condition from zone of unknown type |
| UT |
Untyped zone trouble |
Trouble condition from zone of unknown type |
| UU |
Untyped zone unbypass |
Bypass on zone of unknown type has been removed |
| UX |
Undefined |
An undefined alarm condition has occurred |
| UY |
Untyped missing trouble |
A point which was not armed is now logically missing |
| UZ |
Untyped missing alarm |
A point which was armed is now logically missing |
| YB |
Busy seconds |
Percent of time receiver's line card is online |
| YD |
Receiver line card trouble |
A line card identified by the passed address is in trouble |
| YE |
Receiver line card restored |
A line card identified by the passed address is restored |
| YO |
Unknown message |
An unknown message was received from automation or the printer |
| VI |
Printer paper in |
Transmitter or receiver paper in |
| VO |
Printer paper out |
Transmitter or receiver paper out |
| VR |
Printer restore |
Transmitter or receiver trouble restored |
| VT |
Printer trouble |
Transmitter or receiver trouble |
| VX |
Printer test |
Transmitter or receiver test |
| VY |
Printer online |
The receiver's printer is now online |
| VZ |
Printer offline |
The receiver's printer is now offline |
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Last updated: September 12, 2026
