The Potter-Amseco PBA1208 is a 8", 120 VAC, vibrating bell ideal for use in fire, burglar, or general signaling devices.
The PBA1208 mounts easily to a standard 4"x4" electrical box and comes in a red, powder coating. With a low power consumption but surprisingly high decibel rating, the PBA1208 boasts incredible power efficiency.
The bell is designed for indoor and outdoor use. However, a weatherproof backbox is required to install the unit outdoors.