What unique characteristic do limit switches in the BAK-14 system exhibit?

Limit switches in the BAK-14 system are notable for their use of a mercury-type mechanism. This characteristic allows them to function effectively in detecting the position of moving parts within the system. The mercury switch operates based on the movement of mercury within a sealed container, which makes it particularly responsive to orientation changes. This feature is essential in applications where precision and reliability are key, as the mercury mechanism can provide accurate position detection even in challenging conditions.

In contrast, while visual indicators of position and programmability could be beneficial in different contexts, they do not specifically pertain to the BAK-14 limit switches. Similarly, although pressure sensitivity is a valuable trait for many switches, it is not applicable to the design and operation of the limit switches used in the BAK-14 system. Thus, the unique characteristic of utilizing a mercury-type mechanism stands out as the defining feature of its limit switches.