Wheelock® 43T Vibrating Bell
Dependable Audible Signaling for Fire and Life Safety Systems
The Wheelock 43T Vibrating Bell from Kidde Fire Systems delivers powerful, unmistakable sound for fire and life safety applications. Designed for indoor, outdoor, and industrial environments, it combines high dBA output with low current draw for long-term reliability and efficiency.
Constructed with a low-frequency aluminum shell to enhance sound penetration, the 43T bell ensures alerts are heard clearly even in high-noise environments — making it a trusted choice for facilities that require consistent, high-performance audible notification.
Key Advantages
- High-Output Performance
Produces up to 88 dBA at 10 feet for effective signaling in noisy spaces. - Versatile Mounting Options
Compatible with surface, semi-flush, outdoor, and concealed conduit installations. - Durable Aluminum Construction
Low-frequency shell design improves audibility and resists corrosion.
- Simple Wiring
Screw terminals accept 12–18 AWG wire for quick field installation. - Attractive, Rugged Finish
Red textured coating enhances visibility and long-term durability. - Low Power Consumption
Operates efficiently at 0.117 amps with 115 VAC input.
Applications
The Wheelock 43T Vibrating Bell is ideal for:
- Fire alarm and evacuation systems in commercial and industrial facilities
- Manufacturing or processing plants with high background noise
- Indoor or outdoor areas where corrosion-resistant, weatherproof signaling is required
- Locations needing Class I, II, or Division-rated signaling devices
System Architecture
Construction & Design
Shell: 10-inch low-frequency aluminum for enhanced sound clarity
Mounting: Compatible with multiple backbox and conduit configurations
Finish: Red textured powder coat for high visibility and durability
Terminals: Quick-connect screw terminals for simplified wiring
Technical Specifications
| SPECIFICATION | DETAILS |
|---|---|
| Operating Voltage | 115 VAC |
| Current Draw | 0.117 A |
| Sound Output (10 ft) | 88 dBA (UL 464 Reverberant) / 86 dBA (ULC Anechoic) |
| Shell Size | 10 in. (254 mm) |
| Mounting Options | Surface, Semi-Flush, Outdoor, Concealed Conduit |
| Finish | Red Textured Enamel |
| Connection Type | Screw Terminals (12–18 AWG) |
| Weight | Approx. 5 lb (2.3 kg) |
| Approvals | UL Listed, CSFM Listed, Class I Groups B, C, D / Class II Groups F, G |
Compliance & Certifications
- UL Listed for Fire Protective Service
- cUL and CSFM Listed
- Certified for Class I Groups B, C, D and Class II Groups F, G
- Meets UL 464 and ULC standards for audible signaling devices
Resources
Data Sheet: Wheelock 43T Vibrating Bell (K-75-009)
Kidde Fire Systems Capabilities Brochure (BR101_2023)
Resource links coming soon!
Sound You Can Trust
Built for reliability and engineered for clarity, the Wheelock 43T Vibrating Bell provides dependable audible notification in the most demanding environments — ensuring people act quickly when every second counts.
