Notification standard (strobe colors, tones beyond T3/T4)

Since the use of colored strobes has come up in some discussions (on Discord at least, if not here as well), I decided to come up with something resembling a “standard color code” for notification strobes, as well as manual initiating devices.

Color Memory Aid Response Condition Associated Tone/Code if voice is not in use (Note 6) Bezel Labels (Note 3)
Clear “CLEAR THE AREA!” Evacuation from the space/room or building Fire or Smoke, Carbon Monoxide, Gas Leak (flammable, toxic, or asphyxiant, Note 2), Agent Discharge, Sprinkler Waterflow (exterior strobes only), General Life Safety Notification (Note 1) Temporal 3 (fire/smoke), Temporal 4 (Carbon Monoxide), March Time/Pulsed (Gas Leak), Continuous (Agent Discharge or Sprinkler Waterflow) unlabeled (Note 1), FIRE (or a fire symbol), AGENT (for agent discharge), WATERFLOW (for exterior sprinkler waterflow strobes), or a bezel specific to the hazard (for local alarms)
Amber “be Alert!” or “Air Raid!” Seek Further Information (MNS/ECS), Private Mode Notification (where Private Mode is available), or Take Shelter (Note 5) General Mass Notification, Severe Weather or Move to Shelter (Note 5) Chime (Note 4) or Swept Siren (Note 5) ALERT or EMERGENCY (for MNS/ECS strobes), EMERGENCY (if used without MNS/ECS)
Blue “Burglar!” As appropriate for the situation Burglary or Intrusion Visual Notification, General Security Emergency, Lockdown Continuous (bell/horn/burglar siren) or other appropriate tone for burglary/intrusion (Note 7), with bell cutoff. Silent strobe otherwise. unlabeled or EMERGENCY for general security service, LOCKDOWN for lockdown notification
Green “something Good for a change”, “Go get it!” As appropriate to the notification Doorbell or other non-emergency condition Chime or Buzzer unlabeled, DOOR if used for a doorbell (Note 9)
Red “Stop, Responders Needed!” Notify trained response personnel; if no response personnel are available, contact emergency services; DO NOT ENTER THE SPACE YOURSELF Life safety emergency to be responded to by patrolling responders or requiring notification of emergency services (Note 8) Silent strobe unlabeled, STOP, or EMERGENCY

Table 1: Strobes and Notification Appliances.

Table 1 Notes:

  1. Unlabeled appliances must be used whenever a clear strobe is used for all MNS/voice alerts, or when a single strobe is used for fire and non-fire life safety conditions (such as gas or CO)
  2. Local alarms for gas leakage (such as refrigerant alarms) must only use clear strobes within the space intended to be evacuated
  3. Labels may be translated into any appropriate language (such as FEU or FUEGO for fire strobes)
  4. This tone must only be used if a specific alert message is being delivered through non-voice means, such as textual appliances or personal devices, or if the alert is only intended for personnel specifically trained in its meaning (private mode notification)
  5. This strobe and tone combination must only be used where appropriate training for building occupants is in place, and must not be used in public spaces or where it may be confused with a burglary siren.
  6. Codes specified without a tone may be used with any appropriate tone, such as narrowband horns, low frequency horns, fire bells, or burglary sirens.
  7. Burglary tones must be distinct from all other tones used in a system. The use of multiple tones in sequence is permitted.
  8. Red strobes must be used when the intent is to notify outside parties of a life safety emergency in a localized area. An example of this is a refrigerant leak alarm strobe outside a machinery room.
  9. Green strobe appliances must have a white body
Body Color Intended System Response Labeling (Note 5)
Red Fire Alarm, Agent Release (Note 2) FIRE or a fire symbol, AGENT or AGENT RELEASE for releasing applications
Yellow Emergency Stop, Shutdown, or Power Off; Evacuation, Hazardous Materials, Gas Leak, or Emergency (Note 3) SHUTDOWN (Note 1), EMERGENCY STOP (E-STOP), EMERGENCY POWER OFF (EPO), or unlabeled (Note 4); EVACUATION (EVAC), HAZMAT, GAS, or EMERGENCY where used for evacuation alarms
Blue Security, Police, Lockdown, Medical, or General Emergency/Person Down SECURITY, POLICE, or LOCKDOWN for security applications, MEDICAL, EMERGENCY, or PERSON DOWN for medical or general emergencies
White Agent Release AGENT, PREACTION, DELUGE, or AGENT RELEASE
Orange Evacuation, Hazardous Materials, Gas Leak, Smoke Removal EVACUATION, EMERGENCY, HAZMAT, SMOKE VENT, SMOKE REMOVAL, or GAS
Green Exit Door Release (Emergency Request to Exit) EXIT, EMERGENCY EXIT, DOOR RELEASE, or an exit symbol
Metal (wallplate) with red button Suppression Abort ABORT
Metal (wallplate) with green button Exit Door Release EXIT, REQUEST TO EXIT, DOOR RELEASE, or an exit symbol

Table 2: Manual Initiating Devices (pulls, buttons, callpoints)

Notes for Table 2:

  1. SHUTDOWN may be preceded by the name of the system being shut down (such as HVAC, CHILLER, GENERATOR, or PROCESS), and must be preceded by the name of the system being shut down if multiple shutdown devices are present
  2. Red agent release devices must not be used where manual fire alarm initiating devices are present in the space protected by the fire suppression system
  3. Yellow devices must only be used for evacuation or leak alarm initiation where the initiating devices used cannot be confused with emergency stop switches
  4. Unlabeled emergency stop/shutdown devices must not be used where it is unclear what process or function would be stopped by the device
  5. Labels may be translated into any appropriate language

Does anyone have other color-code suggestions for either strobes or initiating devices they’d like to add, or obvious applications I’m missing with this list?

2 Likes

Thanks for going in depth on this! I really think there needs to be more standards on this, and this seems like a good starting point.

I did a post a while back on the confusion of all of this:

I feel like the next big innovation (not that it would require much work to implement), especially with addressable notification and LED strobes will be multicolored strobes from one device.

Under certain conditions, the LED L-Series strobes do flash yellow. However, one issue with multicolored strobes is that colorblind people might not know what color is flashing.

You’re right. That’s why the combination of different strobe colors, different tones, and voice messages is important.

Very detailed tabel! Here in europe, orange call points are mostly used for smoke purge, smoke vent, smoke suction, smoke evacuation etc. Yellow call points for suppression releas, general evac, or e-stop. blue buttons for abort, blue call points for lockdown, white for any use, and green for evac aswell or emergency exits. Here red is used for evac and/or FD indentifier. orange is used for that aswell. Green strobes indicate evac or emergency exit here. blue for the same reasons as you guys. I do see that several companies and buildings in the us use blue or green pulls for medical. also in the strobe section, you havent listed blue for lockdown.

Yeah – multicolor + multitone on an addressable device would be mega handy for situations like suppression alarms where you’d otherwise need some way of cobbling together multiple notification forms. Then again, the big downside of addressability is the fact it relies on proprietary to proprietary-ish protocols…

I wonder if there are any European-style beacons that support multicolor?

I think so. Only from red to white though. I have only seen this on a conventional strobe so youd need to flip a DIP-switch but if I remember correctly, some brand, I forgot which allows the colour of the strobe to switched in proggraming of the panel via the addressable loop. Also in this side of the world, system sensor’s addressable sounders run on the same protocol as you guys have in the states (we have both clip and AP/flashscan). On AP/flashscan protocol, you can program sounders to change sound based on event.