Pres Air Trol TinyTrol 3PDT FF Air Switch [Blue] (MCB311A) calvertengineering this time clock helps support

this time clock helps support dependable scheduling

This replacement is especially useful when the original transformer has failed

Helps restore dependable internal debris capture

A replacement filter cartridge helps renew the working filtration element inside a compatible spa or pool filter system

Useful when the original body is cracked or damaged

Pres Air Trol TinyTrol 3PDT FF Air Switch [Blue] (MCB311A) calvertengineering this time clock helps supportThe PresAir Trol TinyTrol 3PDT FF air switch in blue is designed for compatible pneumatic control systems that need a 3PDT switching format in a compact air actuated design. Air switches like this are useful because they allow electrical functions to be triggered through pneumatic input rather than a direct touch electrical control. This version is especially useful when the original air switch has worn out, sticks internally, or no longer switches