Ordering Information Model SRD991 Intelligent Positioner Version -C Double Acting Input/Communication H HART Communication (4 - 20 mA) Additional Inputs/Outputs F Position Feedback 4 - 20 mA and one Binary Output for Alarm(1) Built-In Limit Switch S Without Built-In Limit Switch Cable Entry 6 1/2"-14 NPT (with Adapter(s) M20x1.5 to 1/2"-14 NPT) Electrical Classification EAA II 2 G EEx ia IIC T6 according to ATEX(2) Attachment Kit N Order as Auxiliary Manifold R Pneumatic connection G 1/4 Options -I-V01 Infrared Interface For Communication By Means Of IRCOM(3)LCD with Menu-Language in English / German / French Not available with Electrical Classification FAA, NFM and CAAOnly with Input/Communication F, H, P and Q.Only available with Optional Feature LCD (-V01 to -Vxx)