Eaton’s FHF Ex secondary telephone bell is a high-volume explosionproof telephone call signalling for indoor and outdoor installation. It has been specifically designed for application in potentially explosive and hazardous areas. 

The Ex secondary telephone bell is manufactured from die-cast aluminium a high-quality durable material which can withstand the harshest conditions, while reducing the need for maintenance. With a compact design and user-friendly installation this accessory is efficient and effective. 

This accessory is flexible to suit the user’s needs, the customer may choose between single tone, 2- tone, 3-tone or warble-tone using the available DIP switches.