Engineered to be durable, Federal Signal’s Industrial Telephones are resistant to fluctuating temperatures, humidity, sea water, dust and mechanical wear and tear. They can be used in harsh environments with hazardous dust and gases. Cased in impact resistant, shockproof glass fiber housing, it is also resistant to damage from acids, sea water, alkalis, moisture and grease. From our popular explosion-proof industrial telephone to our extensions ringer devices, turn to us to solve your telephony requirements.