TrolMaster - Digital Day / Night Temperature Controller BETA-4

Hands-off day and night temperature control for your grow space

The TrolMaster BETA-4 Digital Day/Night Temperature Controller switches a heater or cooling device on and off automatically to hold a stable temperature in a grow tent or grow room. A built-in photocell senses whether your grow lights are on or off and applies separate day and night targets without any manual changeover, so plants sit in the right climate through both vegetative growth and flowering. It handles devices drawing up to 10A and runs plug-and-play straight from a 240V outlet.

Losing control of the swing between lights-on and lights-off?

Grow lights throw off serious heat during the day, then temperatures drop sharply the moment they switch off. Left unmanaged, that day/night swing slows vegetative growth, knocks back nutrient uptake and stresses plants through flower. The BETA-4 catches the swing at both ends: plug a heater or cooler into the controller and it fires the equipment whenever the temperature drifts outside the range you have set, keeping conditions steady for stronger roots and better bud development.

Key Benefits

• Automatic heating or cooling control up to 10A from a single outlet on the controller
• Separate day and night setpoints for precise climate control across the whole cycle
• Built-in photocell detects the lighting cycle and switches modes with no manual input
• Digital display with three-button operation for quick, fuss-free programming
• Triac output switching for reliable, silent, long-life operation
• Plug-and-play setup so it is running within minutes

How to Use

1. Connect the temperature sensor to the BETA-4 and place it at canopy height for a true reading.
2. Plug your heater or cooling device into the controller outlet, staying within the 10A limit.
3. Plug the controller into a 240V mains outlet.
4. Set your day and night temperature targets on the digital display.
5. Leave it running - the photocell reads the lights and switches between day and night targets automatically.