24V Fire Alarm Strobe Siren – 3-Tone 100dB Flasher | LS-104
24V Fire Alarm Strobe Siren – 3-Tone 100dB Flasher | LS-104
24V Fire Alarm Strobe Siren – Loud, Reliable, Dual-Signal Warning
Keep your property protected with this powerful 24V Fire Alarm Strobe Siren (Model LS-104). Combining a high-decibel audible alert with a bright, attention-grabbing strobe flasher, this unit delivers both visual and audible warnings — making it a dependable addition to any residential or commercial fire alarm system. With 3 selectable alarm tones and a flash intensity of ≥1.2WS, it's engineered to cut through noise and darkness to ensure occupants are alerted immediately.
Key Features
- Dual Alert Mode: Combines a loud sounder (≥100dB) with a high-intensity strobe flasher for maximum visibility and audibility
- 3 Selectable Alarm Tones: Choose from 3 distinct alarm sounds to suit your system requirements
- Wide Voltage Compatibility: Operates on DC 12–24V (no polarity), making it easy to wire into most standard alarm panels
- High-Intensity Strobe Flash: Flash intensity ≥1.2WS with a flash period of ≤1.5 seconds and a rated lifespan of ≥40,000 flashes
- Wide Operating Range: Functions reliably in temperatures from -10°C to 50°C and humidity up to 95% RH
- Compact & Easy to Install: Measures just 160×117×53mm — fits neatly on walls and ceilings without taking up excessive space
- Low Power Draw: Alarm current of only 100–150mA, ideal for battery-backed alarm systems
Technical Specifications
| Model | LS-104 |
| Working Voltage | DC 12–24V (no polarity) |
| Alarm Current | 100–150mA |
| Operating Temperature | -10°C to 50°C |
| Humidity | ≤95% RH |
| Flash Intensity | ≥1.2WS |
| Flash Period | ≤1.5 seconds |
| Flash Lifespan | ≥40,000 flashes |
| Alarm Volume | ≥100dB |
| Alarm Tones | 3 |
| Dimensions | 160 × 117 × 53mm |
Who Is This For?
This strobe siren is ideal for homeowners, property managers, electricians, and security system installers looking to add or upgrade notification devices on an existing fire alarm control panel. Its no-polarity wiring simplifies installation, and the wide voltage range (12–24V DC) ensures compatibility with most standard panels.
Made in Mainland China.
For general guidance on fire alarm system requirements and best practices, visit the U.S. Consumer Product Safety Commission – Smoke Alarms & Detectors.
Frequently Asked Questions
Q: What voltage does this fire alarm strobe siren require?
A: The LS-104 strobe siren operates on DC 12–24V with no polarity, meaning you don't need to worry about positive/negative orientation when wiring it into your alarm panel.
Q: How many alarm tones does this siren support?
A: This unit supports 3 selectable alarm tones, giving you flexibility to differentiate alert types or match your existing alarm system's configuration.
Q: How loud is the alarm and how bright is the strobe?
A: The sounder produces ≥100dB of alarm volume — loud enough to be heard through walls and background noise. The strobe flash intensity is ≥1.2WS with a flash period of ≤1.5 seconds, providing a clearly visible warning signal even in brightly lit environments.
Q: How long will the strobe flash last before it needs replacement?
A: The flash light is rated for ≥40,000 flash cycles, ensuring long-term, reliable performance without frequent maintenance.
Q: Is this siren compatible with standard fire alarm control panels?
A: Yes. Its wide voltage compatibility (DC 12–24V, no polarity) makes it suitable for integration with most standard fire alarm control panels used in residential and commercial settings.