HomePro Series Options & Accessories Options & Accessories Popular Williamson accessories include: Interface Module (IM), Swivel Bracket (SB), Water Cooling Plate (WC), Air Purge (AP), Protective Cooling Jacket (PCJ) and a selection of Flange Mounts (FMxx). Pro Series Traditional Style AP – Air Purge SB – Swivel Bracket FMxx – Flange Mounts PCJ – Protective Cooling Jacket Pro Series Fiber-Optic Style FOSB – Fiber-Optic Swivel Bracket FOMAQ – Non-conductive Fiber-Optic Mounting Assembly, Quartz Window STSB – Sight Tube Swivel Bracket (for use with SSB & AG) FOFMxx – Fiber-Optic Flange Mounts STFMxx – Sight Tube Flange Mounts (for use with SSB & AG) Pro Series - All Models IM – Interface Module VCS – Vortex Cooling System ABF – Adjustable Bellows Flange 2″ ANSI Both ends WC – Water Cooling Plate Consult with one of Williamson’s Temperature Experts We would love to discuss your temperature measurement application with you.