The W0 Series is a melt pressure control system which comes complete with the following items: W3x-6-M-xxxx-1-4-D-000 (oil-filled melt pressure transducer) 2500-0-0-0-W-0-1 (pressure controller) C08WLS (25 foot 6-pin cable) SF18 (mounting bracket) The W0 Series is an excellent solution for those who wish to have the accuracy and stability of a transducer and digital controller at a great price.