Product Description: Explosion Proof Telephone The Explosion Proof Telephone is a powerful voice equipment designed for use in hazardous areas where explosive gases or combustible dust may be present. It is an advanced explosion-proof phone that supports SIP connection protocol and is available in orrange color. It is constructed to withstand operating temperatures from -40℃ to +70℃ and powered by DC12V with an external adapter. This Explosion Proof Telephone is equipped with