Lauda C/K Edition 2000 Operating instructions

Hello, I'm your chat assistant. I have reviewed the LAUDA operating instructions for the Compact-thermostats C 6 CS, C 12 CS, C 20 CS, K6 KS, K12 KS, K 20 KS, and the Bridge thermostats GCS and GKS. This document provides detailed information on the use of these laboratory thermostats, their safety features, and connection to external systems. I'm ready to answer your questions about these devices, from basic operation to more specific details like controller settings and safety precautions.
What type of bath liquids can be used?

What is the purpose of the cooling coil?

What safety features are included?

Can these thermostats be used with external systems?