D-D Dual Heating & Cooling Controller
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.
Features
- Plug and play – no wiring required.
- Heating/cooling can be set to within 0.3 deg C of target temperature e.g. Control Range of 24.7 – 25.3 deg C (with set temp of 25 deg C).
- Audible and Visual Alarm Function
| Feature | Description |
|---|---|
| Temperature Control Range | ±0.3°C from set point |
| Power Supply | Double mains sockets: one for heater, one for chiller/fan |
| Temperature Sensor | Waterproof plastic coated, suitable for marine aquariums |
| Alarms | Audible and visual alerts for temperature deviations |
FAQ
Can this controller manage both heating and cooling simultaneously?
Yes, the D-D Dual Heating & Cooling Controller allows simultaneous control of heating and cooling, making it ideal for maintaining stable temperatures in marine aquariums.
Is the temperature sensor waterproof?
Yes, the plastic-coated temperature sensor is waterproof and designed for use in marine aquarium environments.
What is the temperature accuracy of the controller?
The controller can maintain the target temperature within ±0.3°C, such as a range of 24.7°C to 25.3°C when set to 25°C.

Luke Howard –
This controller works perfectly in my saltwater tank. I set it to 26°C and it maintains the temperature very consistently. The alarms are helpful when the temperature goes out of range. No wiring needed, just plug and play. Easy to use and reliable.
Warren Arnold –
I use it for both heating and cooling during seasonal changes. The dual power sockets are a big plus. It keeps my tank stable and the display is clear. A little slow to respond at first, but settles quickly.
Vanessa Lawrence –
Great for marine aquariums. The waterproof sensor works well without any issues. I’ve used it for over a year and it still functions as expected. The visual and audible alarms are very useful for monitoring.