ContCo Series CU-3 controllers, are devices that transmit information using datas received from level controllers to users and automation systems. The sensor information about the level amount can be transferred to the ContCo Series CU-3 controller and monitored on the screen. With this information, 3 NO-NC (Normally Open / Normally Close) relays that are integrated into the device, can control three different devices like motor, pump, on-off valve, solenoid valve, audible or light alarm. In addition, because of analog outputs like 4-20 mA, and 0-10V and because of communication protocol of RS485 Modbus, connection with the otomation systems can be established.