Please see below the part number combinations available for this product.
Fluid Control Unit FCU 8000 Series Portable Laser Particle Counter
Description
FCU8110-1-K/-BUS
FCU8110-1-M
FCU8110-1-N
FCU8110-1-O
FCU8210-1-K/-ISO11943
FCU8210-1-M/-ISO11943
FCU8210-1-N/-BUS-ISO11943
FCU8210-1-N/-ISO11943