... FM Intrinsic Safety and Non-incendiveIntrinsically Safe for Class I/II/III, Division 1, Groups A, B, C,D, E, F, and ... , Groups B, C, and D.Dust Ignition Proof for Class II/III, Division 1, Groups E, F, Gwhen installed in accordance with ... , Groups B, C, and D; Class II, Division 1, Groups E, F, andG; Class III, Division 1 hazardous locations, when installedin accordance ...