The Dual Digital Temperature Controller is designed to allow precise control of the temperature in an aquarium and has 2 modes which allow control of both heating and cooling at the same time.

Double mains power socket – one power socket for heater control and the other for fan/chiller control.
Display with temperature sensor – used to set and display temperature and alarms and measure temperature.
The plastic coated temperature sensor is waterproof and suitable for use in a marine aquarium