Indication Units Units are available for Alfa Laval valves LKB/LKLA, SRC, ARC and ARC-SB     IndiTop The IndiTop indication unit is a straightforward, easy-to-use electrical feedback unit for use with Alfa Laval sanitary valves. It can be set up either manually or via a PLC.                 ThinkTop The ThinkTop® range is the most advanced valve-top control and indicator system available anywhere in the world, providing access to the full spectrum of digital electronic interface modules used for operating and monitoring solenoid valves.     ThinkTop Basic The ThinkTop® Basic is a basic control head including sensor board and solenoid valves to control processing valves. It is used to control and supervise pneumatic valves and is mounted on top of the valve.