In order to enhance the functionality of weatherproof telephone in high ambient noisy areas, an External Weatherproof Ringer is used with Weatherproof Phone.
 
It acts as a secondary telephone call indicator to signal incoming telephone call. 
 
It is High-volume telephone call signaling device for harsh and hostile environments. 
 
The robust housing withstands rain, high humidity and similar harsh & hostile environment condition. 
 
User can select either single tone OR dual tone OR multi tone unit.