FIRE INSTRUCTION & SERVICE MANUAL
AL121H Range AlertAlight Combined Sounder LED Beacons
UL464 / CAN/ULC-S525 & UL1638 / CAN/ULC-S526
Model: AL121HDC
E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH sales@e2s.com e2s.com D221-00-351-IS-UL Issue A 26/04/2021
• -40°C to +66°C / -40°F to +151°F
• Units can be mounted using the 2-off ø9mm holes in the mounting lugs or through the back of the housing using the supplied gasket seal.
• AL121HDC024 is approved for use as an Audible & Visual signal appliance for fire alarm use – Private Mode. (UL464 & CAN/ULC-S525
& UL1638 & CAN/ULC-S526).
• AL121HDC024 produces a minimum sound pressure level of P2: US: 93.67dB(A); CA: 101.2dB(A) / P3: US: 94.33dB(A); CA: 102.4dB(A)
at 10 feet (figures @ worst case 11.5Vdc).
• AL121HDC024 produces a minimum sound pressure level of P2: US: 97.59dB(A); CA: 105.4dB(A) / P3: US: 100.63dB(A); CA: 107.5dB
(A) at 10 feet (@24Vdc)
• For Fire Alarm applications, the Sounder Volume must be at the highest setting, (see volume control section). For fire alarm use, Tone 12
as shown below must be selected:
• For private mode fire alarm use, the beacons must only be fitted with clear plastic lens covers and must be set to one of the certified flash
patterns of 1Hz, 1.5Hz or 2Hz. Flash Pulse 196ms.
• For light output ratings see below:
• Connection Terminals: Pluggable
AC: 1.0 - 2.5mm2 / AWG18 - AWG12
DC: 0.2 - 2.5mm2 / AWG24 - AWG12
• Terminal Tightening torque 0.4Nm
• To maintain Ingress Protection, cable entries must be fitted with suitably rated cable glands or stopping plugs
• Units can be located indoor or outdoor wet use, wall or ceiling mounted and there are no limitations on orientation
• Factory finishes are not intended to be modified
Attention: Installation must be carried out by an electrician in compliance with the National Electrical Code, NFPA 70, and the National Fire Alarm
Signaling Code, NFPA 72 or CSA 22.1 Canadian Electrical Code, Part I, Safety Standard for Electrical Installations, Section 32. / L'installation doit
exclusivement être réalisée par du personnel qualifié, conformément au code national d'électricité américain, NFPA 70, et le code national d’alarrme
incendie et de signalisation NFPA 72 ou CSA 22.1 Code canadien de l'électricité, première partie, norme de sécurité relative aux installations électriques,
Section 32
Attention: Disconnect from power source before installation or service to prevent electric shock / Débranchez-le de la source d'alimentation avant l'instal-
lation ou l'entretien pour éviter tout choc électrique.
Attention: Do not paint / Ne pas Peinturer
On-axis light output rating per UL1638
Model Intensity (cd) at 1Hz
flash rate
Intensity (cd) at 1.5Hz
flash rate
Intensity (cd) at 2Hz
flash rate
AL121HDC024 (12Vdc Mode) 5.9 5.97 6.35
AL121HDC024 (24Vdc Mode) 11.65 12.32 12.38
Surge current ratings for use in fire alarm systems
Model Nominal
Voltage Voltage Range Flash Rate Initial Peak (mA) Initial RMS (mA)
Beacon Sounder Beacon Sounder
AL121HDC024
12Vdc 10 to 14Vdc
1 Hz 202
P2:
1164mA
1164mA /
P3:
1829mA
172
P2: 286mA /
P3: 554mA
1.5Hz 216 172
2Hz 224 172
24Vdc 16 to 33Vdc
(Regulated)
1 Hz 950 204.3
1.5Hz 968.5 206.7
2Hz 969 205.2
