With the help of the Cave-Link (CL) data communication and measurement system physical parameters, like e.g. pressure (water, air), temperature (water, air), rainfall and relative humidity at different locations in caves and outside are automatically collected and transmitted to a central database. The measured values can be read here and presented in a graph. Cave-Link devices can also transmit short messages (SMS) and are used this way during speleology projects and rescue missions. Read more here.