Product Overview The PDC-624 vibrating bell from Potter is designed for fire or general signaling in both indoor and outdoor environments. It offers low power consumption while delivering high decibel output, making it suitable for supervised alarm circuits. The bell is AC or DC compatible, with DC models featuring motor-driven, polarized operation and built-in transient protection. Indoor mounting is done directly on a standard 4” electrical box, while outdoor installations require a weatherproof backbox such as the BBK-1 or HC-BB.

Key Features

- Listed for indoor and outdoor use (weatherproof backbox required for outdoor).
- Low current draw for energy-efficient operation.
- High decibel output: typical 95 dB at 10 ft, minimum 77 dB at 10 ft.
- Available in 6”, 8”, and 10” sizes.
- AC and DC compatible; DC models are motor-driven, polarized, with transient protection.
- Mounts to standard 4” electrical box or optional BBK-1 / HC-BB weatherproof backbox.
- Durable construction: steel cover with red powder coat, non-corrosive composite base, corrosion-resistant finishes.
- Voltage options: 12VDC, 24VDC, 24VAC, 120VAC.
- Environmental range: -40°F to 150°F (-40°C to 66°C).
- Terminations: AC models with four 18 AWG stranded wires; DC models with 18 AWG stranded wire.
- Compliant with NFPA 13, NFPA 72, and local AHJ requirements.