A300V Intrinsic safety marine radio Ocean one Walkie Talkie Marine Walkie Talkie Marine radio,Intrinsically safe Marine Radio Ex ib IIB T4 Gb explosion-proof levels Intrinsic safety certification Float & IP68 waterproof rating Marine handheld radio VHF 156-163.425MHz A300V Intrinsic safety radio  complies with GB3836.1-2010 "Explosive environment Part 1: General requirements for equipment" and GB3836.4-2010 "Explosive environment Part 4: Intrinsically safe "i" protected equipment" standard, through ATEX II 2G Ex Ib IIB T4 is intrinsically safe and meets the requirements of explosion-proof environment. It is suitable for Zone 1 and Zone 2, T1-T4 explosive gas mixture sites containing IIA-IIB. IIA IIB IIC T1(450) Methane, toluene, methyl ester,Ethane, propane, acetone,Acrylic, benzene, styrene,Carbon monoxide, ethyl acetate,Acetic acid, chlorobenzene,methyl acetate,ammonia Propylene, propylene Clear, dimethyl ether, Hydrogen cyanide, City gas Hydrogen, water gas T2(300) Methanol, ethanol, ethylbenzene, Propyl alcohol, propylene, butanol,Butane, butyl acetate,Amyl acetate, cyclopentane Butadiene, ring Ethoxyethane, B Ene, furan Acetylene T3(200) Pentane, pentanol, hexane, Hexanol, heptane, octane, Ethanol, turpentine, Naphtha, petroleum (including steam Oil), fuel oil,Pentanol tetrachloromethane Dimethyl ether, propylene Aldehyde, hydrogen sulfide T4(135) Acetaldehyde, trimethylamine Dibutyl ether, two Ether, ethyl methyl, Tetrafluoroethylene Carbon disulfide T5(100) Ethyl nitrate T6(85) Ethyl nitrite A300V is a waterproof and Intrinsic safety radio.The A600V can be floated when fell into water and waterproof to IP68,can be more than 1 meter depth in water for 1 hour.   Intrinsic safety marine radio adopts a new optimized intrinsic safety design. The battery adopts dual output current limiting protection and short circuit protection. The whole structure design is compact and reliable,with safe and reliable intrinsic safety performance, and is the ideal professional communication transceiver in hazardous gas working environment.