TrolMaster - Digital Day / Night Temperature Controller BETA-4

The TrolMaster BETA-4 Digital Day/Night Temperature Controller provides simple and reliable temperature management for indoor growing environments. Designed to control heating or cooling devices automatically, the BETA-4 helps maintain stable temperatures inside a grow tent or grow room — an essential factor for healthy plant growth, nutrient uptake and consistent yields.

The controller features separate day and night temperature settings, allowing growers to maintain optimal environmental conditions throughout the entire grow cycle. A built-in photocell detects whether grow lights are on or off, automatically switching between the programmed day and night temperature targets. This ensures plants experience the correct climate during vegetative growth and the flowering stage.

Key Benefits

• Automatically controls heating or cooling devices up to 10A
• Separate day and night temperature settings for better climate control
• Built-in photocell detects lighting cycles automatically
• Digital display with simple three-button operation
• Helps stabilise grow tent and grow room temperatures
• Supports healthier plant development and improved yields
• Plug-and-play setup for quick installation

How It Solves Grow Problems

Temperature swings are a common challenge in indoor growing setups. During lights-on periods, grow lights generate significant heat, while temperatures can drop quickly when lights turn off. These fluctuations can slow vegetative growth, reduce nutrient uptake and stress plants during the flowering stage.

The BETA-4 solves this by automatically adjusting temperature control between day and night settings. Growers can plug a heater or cooling device directly into the controller, allowing it to activate the equipment when temperatures move outside the set range.

Maintaining consistent temperatures helps plants develop stronger root systems, maintain stable growth patterns and avoid environmental stress. Stable conditions ultimately improve plant health, bud development and final yield.

How to Use

1. Connect the temperature sensor to the BETA-4 controller.

2. Place the sensor at canopy height inside the grow tent or grow room for accurate readings.

3. Plug the heating or cooling device into the power outlet on the bottom of the controller (maximum 10A).

4. Plug the controller into a 240V power outlet.

5. Set the desired day and night temperature targets using the digital display controls.

6. The built-in photocell will detect lighting conditions and automatically switch between the programmed day and night temperature settings.

Technical Specifications

• Input Voltage: 240V AC
• Output Switch: Triac
• Maximum Device Load: 10A
• Fuse Rating: 6A / 250V
• Temperature Control Range: 40–100°F
• Temperature Deadband: 5°F
• Power Cord Length: 1.8m
• Dimensions: 275mm (L) × 87mm (W) × 94mm (H)**