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The Wheelock E-7070-LS-24-VFR-ULC Speaker Strobe is a low-profile audible/visual notification appliance designed for fire alarm voice evacuation systems. It combines a 70 VRMS emergency voice speaker with a 24 VDC 15-candela strobe in a single red, FIRE-marked appliance for indoor life-safety applications. Wheelock’s Series E documentation specifically lists the E-7070-LS-24-VFR-ULC as a 70 VRMS speaker-strobe model.
The speaker provides field-selectable 1/8, 1/4, 1/2, 1, and 2 watt taps, allowing the audible output and amplifier load to be adjusted for the protected area. The visual section uses a xenon strobe with a fixed 15-candela output and operates from a 24 VDC/FWR notification circuit.
The E-7070-LS-24-VFR-ULC is specifically configured for a 70 VRMS distributed speaker circuit.
Wheelock Series E speakers are available in separate 25 VRMS and 70 VRMS configurations. The E-7070 designation identifies the 70 VRMS version.
The transformer provides five field-selectable power taps:
These settings allow installers to adjust individual speaker output while controlling the total load placed on the fire alarm voice amplifier.
Published Series E sound output at 10 feet is:
The speaker provides a frequency response of approximately 400–4,000 Hz, supporting reproduction of emergency voice instructions and fire alarm tones.
Actual installed sound levels depend on room acoustics, speaker placement, mounting orientation, ambient noise, and other environmental conditions.
The E-7070-LS-24-VFR-ULC incorporates a fixed 15-candela visual strobe.
Wheelock’s Series E ordering table specifically identifies the exact model with a 15 cd strobe. This is important because the E-7070-LS-24-VFR-ULC is not a field-selectable multi-candela model.
The strobe uses a xenon flashtube and solid-state circuitry to provide visible emergency signaling. Wheelock specifies a minimum flash rate of approximately one flash per second.
Wheelock’s Series E model suffix identifies the physical configuration of the appliance.
The VFR portion of the E-7070-LS-24-VFR-ULC model therefore identifies the appliance as a vertical-lens, FIRE-marked, red speaker strobe.
The speaker and strobe portions operate through separate electrical inputs.
This allows the:
This separate-circuit configuration is typical of voice evacuation speaker strobes because the audio signal and visual notification power perform different functions.
The Series E speaker design includes a factory-installed blocking capacitor that supports DC supervision of the speaker circuit.
This allows compatible fire alarm voice equipment to supervise circuit continuity without the supervisory DC interfering with normal audio operation.
The 70 VRMS Series E configuration uses the appropriate speaker-line blocking arrangement documented by Wheelock for supervised life-safety audio circuits.
Wheelock specifies that circuit design should consider average, peak, and inrush current when determining power-supply capacity, fuse requirements, conductor size, and voltage drop.
Wheelock identifies the Series E speaker-strobe family as suitable for indoor wall and ceiling mounting.
The low-profile construction allows the appliance to be installed using compatible electrical backboxes or appropriate surface-mount equipment.
Wheelock also notes that Series E speakers do not fit all Canadian extension rings, so the electrical box and extension-ring arrangement should be verified before installation.
The appliance should remain within its listed environmental limits and should not be used as an outdoor notification appliance unless an installation is specifically approved for that application.
The ULC suffix identifies this model as a Canadian-listed configuration.
Wheelock’s Series E literature identifies ULC as Underwriters Laboratories of Canada and lists the E-7070-LS-24-VFR-ULC among the 70 VRMS ULC speaker-strobe models.
The Series E family documentation references Canadian requirements applicable to speakers and visual signaling appliances, including CAN/ULC-S541 and CAN/ULC-S526.
Typical installation includes:
The Series E provides IN/OUT screw terminals and accepts 12–18 AWG wiring to simplify supervised field connections.
Testing should confirm:
The appliance should also be inspected for physical damage, paint, contamination, loose connections, or other conditions that could interfere with speaker or strobe performance.
Suitable for:
The Wheelock E-7070-LS-24-VFR-ULC Speaker Strobe is designed for indoor voice evacuation applications requiring a 70 VRMS speaker combined with a red FIRE-marked 15-candela visual strobe. Its selectable 1/8-to-2-watt speaker taps, 400–4,000 Hz frequency response, independent speaker and strobe circuits, wall/ceiling mounting capability, and ULC configuration make it suitable for supervised Canadian fire alarm voice systems.
| Weight | 3 lbs |
|---|---|
| Dimensions | 8 × 8 × 8 in |
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The Wheelock E-7070-LS-24-VFR-ULC Speaker Strobe is a low-profile audible/visual notification appliance designed for fire alarm voice evacuation systems. It combines a 70 VRMS emergency voice speaker with a 24 VDC 15-candela strobe in a single red, FIRE-marked appliance for indoor life-safety applications. Wheelock’s Series E documentation specifically lists the E-7070-LS-24-VFR-ULC as a 70 VRMS speaker-strobe model.
The speaker provides field-selectable 1/8, 1/4, 1/2, 1, and 2 watt taps, allowing the audible output and amplifier load to be adjusted for the protected area. The visual section uses a xenon strobe with a fixed 15-candela output and operates from a 24 VDC/FWR notification circuit.
The E-7070-LS-24-VFR-ULC is specifically configured for a 70 VRMS distributed speaker circuit.
Wheelock Series E speakers are available in separate 25 VRMS and 70 VRMS configurations. The E-7070 designation identifies the 70 VRMS version.
The transformer provides five field-selectable power taps:
These settings allow installers to adjust individual speaker output while controlling the total load placed on the fire alarm voice amplifier.
Published Series E sound output at 10 feet is:
The speaker provides a frequency response of approximately 400–4,000 Hz, supporting reproduction of emergency voice instructions and fire alarm tones.
Actual installed sound levels depend on room acoustics, speaker placement, mounting orientation, ambient noise, and other environmental conditions.
The E-7070-LS-24-VFR-ULC incorporates a fixed 15-candela visual strobe.
Wheelock’s Series E ordering table specifically identifies the exact model with a 15 cd strobe. This is important because the E-7070-LS-24-VFR-ULC is not a field-selectable multi-candela model.
The strobe uses a xenon flashtube and solid-state circuitry to provide visible emergency signaling. Wheelock specifies a minimum flash rate of approximately one flash per second.
Wheelock’s Series E model suffix identifies the physical configuration of the appliance.
The VFR portion of the E-7070-LS-24-VFR-ULC model therefore identifies the appliance as a vertical-lens, FIRE-marked, red speaker strobe.
The speaker and strobe portions operate through separate electrical inputs.
This allows the:
This separate-circuit configuration is typical of voice evacuation speaker strobes because the audio signal and visual notification power perform different functions.
The Series E speaker design includes a factory-installed blocking capacitor that supports DC supervision of the speaker circuit.
This allows compatible fire alarm voice equipment to supervise circuit continuity without the supervisory DC interfering with normal audio operation.
The 70 VRMS Series E configuration uses the appropriate speaker-line blocking arrangement documented by Wheelock for supervised life-safety audio circuits.
Wheelock specifies that circuit design should consider average, peak, and inrush current when determining power-supply capacity, fuse requirements, conductor size, and voltage drop.
Wheelock identifies the Series E speaker-strobe family as suitable for indoor wall and ceiling mounting.
The low-profile construction allows the appliance to be installed using compatible electrical backboxes or appropriate surface-mount equipment.
Wheelock also notes that Series E speakers do not fit all Canadian extension rings, so the electrical box and extension-ring arrangement should be verified before installation.
The appliance should remain within its listed environmental limits and should not be used as an outdoor notification appliance unless an installation is specifically approved for that application.
The ULC suffix identifies this model as a Canadian-listed configuration.
Wheelock’s Series E literature identifies ULC as Underwriters Laboratories of Canada and lists the E-7070-LS-24-VFR-ULC among the 70 VRMS ULC speaker-strobe models.
The Series E family documentation references Canadian requirements applicable to speakers and visual signaling appliances, including CAN/ULC-S541 and CAN/ULC-S526.
Typical installation includes:
The Series E provides IN/OUT screw terminals and accepts 12–18 AWG wiring to simplify supervised field connections.
Testing should confirm:
The appliance should also be inspected for physical damage, paint, contamination, loose connections, or other conditions that could interfere with speaker or strobe performance.
Suitable for:
The Wheelock E-7070-LS-24-VFR-ULC Speaker Strobe is designed for indoor voice evacuation applications requiring a 70 VRMS speaker combined with a red FIRE-marked 15-candela visual strobe. Its selectable 1/8-to-2-watt speaker taps, 400–4,000 Hz frequency response, independent speaker and strobe circuits, wall/ceiling mounting capability, and ULC configuration make it suitable for supervised Canadian fire alarm voice systems.
| Weight | 3 lbs |
|---|---|
| Dimensions | 8 × 8 × 8 in |
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