Round Fire Alarm Speaker, Voice Evacuation
$54.49
The Simplex 4902-9721 Fire Alarm Speaker is a conventional audible notification appliance designed for voice evacuation and emergency communication systems. It delivers clear tone and voice reproduction for fire alarm signaling and mass notification applications.
This model features a round, low-profile housing typically used for ceiling installations, with the flexibility to be wall-mounted when required. It incorporates a 4-inch (102 mm) speaker cone engineered to provide smooth frequency response and minimal distortion, supporting intelligible voice messaging in emergency conditions.
The speaker supports 25 VRMS and 70.7 VRMS audio circuits and includes a multi-tap transformer with selectable outputs. This allows installers to adjust sound output levels based on room size and acoustic requirements while maintaining system compliance.
Designed for standard electrical box mounting, the unit connects to supervised notification appliance circuits and integrates easily into conventional voice evacuation systems. Its rugged, flame-retardant housing and moisture-resistant construction support reliable long-term operation in typical indoor environments.
The Simplex 4902-9721 Fire Alarm Speaker is a conventional audible notification appliance designed for voice evacuation and emergency communication systems. It delivers clear tone and voice reproduction for fire alarm signaling and mass notification applications.
This model features a round, low-profile housing typically used for ceiling installations, with the flexibility to be wall-mounted when required. It incorporates a 4-inch (102 mm) speaker cone engineered to provide smooth frequency response and minimal distortion, supporting intelligible voice messaging in emergency conditions.
The speaker supports 25 VRMS and 70.7 VRMS audio circuits and includes a multi-tap transformer with selectable outputs. This allows installers to adjust sound output levels based on room size and acoustic requirements while maintaining system compliance.
Designed for standard electrical box mounting, the unit connects to supervised notification appliance circuits and integrates easily into conventional voice evacuation systems. Its rugged, flame-retardant housing and moisture-resistant construction support reliable long-term operation in typical indoor environments.
| Weight | 1.00 lbs |
|---|---|
| Dimensions | 7.50 × 7.50 × 2.50 in |
| Manufacturer | Johnson Controls |
| Brand | Simplex |
| Condition | New |
| Unit of Measurement | EA (Each) |
| Type | Speaker |
| Style | Hard-Wired |
| Color | Off-White |
| Location | Indoor |
| Marking | None |
| Mounting | Ceiling, Wall |
| Production Status | Active |
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| Weight | 1.00 lbs |
|---|---|
| Dimensions | 7.50 × 7.50 × 2.50 in |
| Manufacturer | Johnson Controls |
| Brand | Simplex |
| Condition | New |
| Unit of Measurement | EA (Each) |
| Type | Speaker |
| Style | Hard-Wired |
| Color | Off-White |
| Location | Indoor |
| Marking | None |
| Mounting | Ceiling, Wall |
| Production Status | Active |
• Fire alarm speaker for voice evacuation systems
• Round housing for ceiling or wall mounting
• Selectable power taps for flexible sound output
• Supports 25 VRMS and 70.7 VRMS audio systems
• 4-inch cone for clear voice reproduction
• Flame-retardant, impact-resistant housing
• Compatible with supervised notification circuits
• 4902-9721 Fire Alarm Speaker
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