SUNPACK Digital Temperature Controller for Heat Mats

Dial in Perfect Germination Temperatures with the SUNPACK Digital Temperature Controller

The SUNPACK Digital Temperature Controller takes the guesswork out of seed germination and cutting propagation by precisely maintaining your heat mat within the 68-108 degree F range your plants need for optimal root development. Compatible with most 120V heat mats, it plugs in between your mat and the wall outlet - a built-in probe with 6ft cord reads the actual temperature at the root zone and cycles the mat on and off to hold your target precisely. LED indicator lights show operational status at a glance, and the display switches between Celsius and Fahrenheit for grower convenience.

Key Features & Benefits

• Precise Temperature Maintenance - Holds heat mat surface temperature within your set target in the 68-108 degrees F range, ensuring optimal germination and rooting conditions for seeds and cuttings.
• 6ft Probe Cord - Long probe cord allows accurate temperature sensing directly at the root zone surface rather than relying on ambient air temperature readings.
• Works with Most 120V Heat Mats - Broad compatibility makes this controller suitable for use with most standard horticultural heat mats, not just specific branded systems.
• Celsius / Fahrenheit Display - Toggle between temperature scales to match your preferred measurement system without any special settings or recalibration.
• LED Indicator Lights - Clear visual indicators show whether the controller is calling for heat, making it easy to confirm the system is cycling correctly.
• Plug-and-Play Operation - No installation required - connects inline between your heat mat and the wall outlet for immediate precision temperature control.

Who Should Use This

The SUNPACK Temperature Controller is designed for cultivators, propagators, and home brewers who need precise temperature control over heat mats. Ideal for seed germination, cloning and cutting propagation, and any application where maintaining a specific root-zone temperature accelerates growth or improves success rates. Also suitable for homebrew fermentation temperature management.

Compatibility

Compatible with most 120V heat mats including DSM and T heat mat brands. The probe cord measures 6ft for flexible placement at the root zone. Temperature range: 68-108 degrees F (20-42 degrees C). Ensure the heat mat's amperage draw does not exceed the controller's rated capacity before use. Standard 120V outlet required.

Frequently Asked Questions

What temperature should I set for seed germination?

Most vegetable and herb seeds germinate best between 70-85 degrees F at the root zone. Warm-season crops like tomatoes and peppers benefit from the higher end of that range (80-85 degrees F), while cooler-season crops like lettuce and herbs germinate well at 70-75 degrees F. Adjust based on the specific requirements of your seeds.

Where should I place the temperature probe?

Place the probe directly on the surface of the heat mat or under the seed tray for accurate root-zone temperature readings. Avoid placing the probe in the air above the mat, as air temperature readings will not accurately reflect the temperature your seeds or cuttings are actually experiencing.

Will this controller work with my existing heat mat?

The SUNPACK controller is compatible with most 120V heat mats. Simply plug your existing heat mat's cord into the controller outlet, plug the controller into the wall, and set your target temperature. The controller will cycle the mat on and off to maintain the setpoint. Verify your mat's wattage does not exceed the controller's maximum rated load.

Can I use this for homebrewing fermentation control?

Yes - the SUNPACK temperature controller is suitable for maintaining fermentation temperatures in homebrewing setups. Place the probe in or near your fermentation vessel and connect a heating pad to maintain consistent temperatures during active fermentation.