... or Zone2, contained Group IIA, Group IIB and Group IIC gases, contained the mixture circumstance with the explosive gas ... multi speed ability, suitable for monitoring large areas. As Ex high-end surveillance product, it has powerful functions, stable ... 2000, GB12476.1-2000Configuration ModeIntegrated Dome ShapeExplosion-proof MarkII2GD Ex d IIC T6, Ex tD A21 T80°CIPIP68(2m/2h)Operating Temperature-40 ...