Hydrofarm Digital Thermostat Controller for Heat Mats — Water-Resistant Probe, 6' Cord, ETL

Designed for growers and hobbyists who need reliable, hands-off warmth control, the JumpStart MTPRTC pairs with any heat mat to maintain steady temperatures for seedlings, cuttings, small pet enclosures, and temperature-sensitive projects. The unit features a 6-foot probe cord, digital setpoint control, LED heating indicator, and an ETL safety certification for measured, safer operation.

How does the JumpStart thermostat ensure consistent temperatures for seedlings and cuttings?

The digital controller monitors soil or tray temperatures through its water-resistant probe and switches the heat mat on or off to hold the chosen setpoint. Because it reads the actual root-zone environment instead of ambient air, it keeps propagation conditions stable without constant manual checks.

• Digital temperature selection from 68°F to 108°F (20°C–42°C approximate)
• Water-resistant probe with 6' cord for flexible placement in trays or pots
• LED indicator shows when the heat mat is actively heating
• Choice of Celsius or Fahrenheit readout for regional preference

Can I use this controller for pets, homebrewing, or other non-plant projects?

Yes — the JumpStart controller expands a heat mat’s usefulness beyond propagation. It maintains specific temperatures for reptile terrariums, arachnid enclosures, fermentation vessels, and other small heated environments where steady warmth matters.

• Compatible with all standard heat mats and similar low-voltage heating pads
• Temperature range suitable for many pet and hobby needs
• Plug-in operation with three-prong grounded plug for safety
• ETL certification gives safety assurance for diverse applications

What safety and convenience features does this thermostat include?

The JumpStart controller combines functional controls with safety-first design. The ETL certification confirms compliance with accepted safety standards, and the grounded plug, clear LED status, and simple digital interface make setup and daily use straightforward.

• Only ETL-certified heat mat thermostat available, per Hydrofarm specifications
• Easy-up/down buttons for fast setpoint adjustments
• Durable, water-resistant probe protects the temperature sensor during moist propagation
• 1-year limited warranty for added buyer confidence

How do I install and position the probe for best results?

Plug the controller into a grounded outlet, plug the heat mat into the controller, and position the probe where it will read root-zone conditions rather than air temperature. Tucking the probe beneath the seedling medium or against the outside of a tray lid gives the most accurate control for germination and rooting.

• Place probe in media or under seedling tray for accurate soil temperature reading
• Use the 6' cord to reach multiple tray locations or move between grows
• Avoid direct contact between probe and heating element to prevent false readings
• Select Celsius or Fahrenheit display using the up/down buttons

Who is this for? Growers who want reliable, hands-off temperature control for propagation, hobbyists maintaining small heated enclosures, and anyone seeking a safer, ETL-certified way to expand heat mat functionality. If you use heat mats for seedlings, cuttings, pets, or fermentation, the Hydrofarm JumpStart thermostat adds precision, safety, and convenience to your setup.