II 1 GD EEx ia IIC T6. BAS01 ATEX 7217. Power bus facility applicable to MTL7706+, 7741 and 7787+ barriers. 7700 Series Safety Barrier. Standard DIN rail mount Removable, colour-coded terminals Bussed power feed to other modules Relay and solid state switch modules Dual channel variants - 6.3mm per channel Proximity detector inputs Direct replacement for MTL700 Series Compatible terminal numbering and safety descriptions Dimensions: 105 x 90 x 12.6mm