Sentry Siren
Sentry 3V8‑H‑B DC Battery‑Backed Warning Siren
SKU#: BN684
Ships via Standard Ground
Battery‑backed Sentry 3V8‑H‑B outdoor warning siren with 116dB output, 360° sound coverage, maintenance‑free design, and UPS‑level reliability.
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The Sentry 3V8‑H‑B is a premium outdoor warning siren designed for reliable, high‑output emergency notification. Introduced in 2016, it delivers full DC, battery‑backed operation to provide dependable UPS‑level reliability at a lower cost than many traditional battery backup siren systems.
Features
- Rated Output: 116dB(C) at 100 ft. based on Sentry Siren field tests
- Coverage Radius: Approximately 3,400 ft. estimated effective range
- Omni‑Directional: Non‑rotating design with true 360‑degree full dB sound output
- Sound Generation: Electro‑mechanically generated sound for consistent warning performance
Power & Reliability
- Battery Operation: DC primary, full battery operation
- Run Time: Minimum 30 minutes of operation from batteries
- Motor: 4HP continuous‑duty DC motor
- Voltage: 48VDC system requiring only 120VAC service for battery charging
Construction & Longevity
- Build Material: Powder coated steel construction
- Optional Finish: Stainless steel available on request
- Maintenance: 100% maintenance free operation
- Warranty: Backed by a 5‑year factory warranty
Installation & Replacement
- Compatibility: Easily replaces aging existing sirens
- Design: Purpose‑built for premium outdoor warning system installations
How is it used
The 3V8‑H‑B is installed as part of an outdoor warning system to deliver audible alerts during emergencies. Its battery‑backed DC operation allows it to function reliably even during power interruptions, with AC power used for battery charging.
Who used it
This siren is used in premium outdoor warning systems where dependable, wide‑area audible notification is required, benefiting from Sentry Siren’s long‑standing manufacturing expertise since 1905.
Maintenance information
The 3V8‑H‑B is designed to be 100% maintenance free, reducing ongoing service requirements and long‑term operational costs.
Storage information
Constructed with powder coated steel for outdoor applications, the siren is suited for standard handling and storage practices consistent with industrial outdoor warning equipment.
What’s included
- Sentry 3V8‑H‑B DC Battery‑Backed Warning Siren
- Sound Output: 116dB(C) at 100 ft.
- Estimated Coverage Radius: 3,400 ft.
- Motor: 4HP continuous‑duty DC motor
- Operating Voltage: 48VDC
- Charging Power Requirement: 120VAC
- Run Time: Minimum 30 minutes on batteries
- Sound Dispersion: Omni‑directional, 360‑degree output
- Construction: Powder coated steel
- Warranty: 5‑year factory warranty
- Model: 3V8-H-B