Explosion Proof Mobile Phone Explosion-proof intercom mobile phone, mode N19, adopted professional PTT buttons. With AndroidTM 10 GO explosion proof intercom system, this flameproof mobile phone supports public network intercom, and is equipped with 105dB high-power front speakers to ensure clear intercom calls. Flameproof mobile phone grade Ex ib IIC T4 Gb, suitable for Zone 1 and Zone 2 in hazardous environments with IIC, IIB, IIA explosive gases, such as petroleum, chemical, pharmaceutical, natural gas pipelines, oil depots, tank farms and other explosion proof telephones for flammable and explosive environments.