The SYCON 2802 is a titration device for measuring water hardness or carbonate hardness. The device has two more relays, which makes a large number of new connection variants possible. There is also an RS485 interface with Modbus RTU protocol and another input contact. An additional, programmable second limit value enables the monitoring of a water intersection or a pre-alarm. The additional relay contacts make it possible to control an external cooling water valve for a sample cooler.