Aqua Medic T Temperature Controller (with Electrode) The temperature controller is offered in two different versions: the HC temperature controller for heaters and the CC temperature controller for cooling systems. The temperature is controlled with an accuracy of up to 0.1°C within the measurement range of 0 - 50°C (CC temperature controller) or 15 - 60°C (HC temperature controller). The maximum switching capacity for heaters is 1000 watts, and for cooling systems, it is 600 watts. The device includes a waterproof temperature sensor that is permanently connected.