Explosion intercom means you can work in the explosive gas environment intercom. And civil intercom is different, the explosion intercom not refers to itself can resist explosive intercom, but that can be in explosive gas environment work intercom. We know, intercom by electromagnetic wave to transmit signal, and the electromagnetic wave transmission by electric field and magnetic field continuous conversion, in this conversion process is easy to produce the spark. And explosion intercom due to its line through special processing, conversion process may produce spark place were blocked.