4T120M Magnetic Thermostat 120°F | Automatic On/Off Heat-Activated Switch for Stove & Fireplace Blower Fans

Magnetic Thermostat 120°F (4T120M) – Automatic On/Off Heat-Activated Switch for Stove & Fireplace Blower Fans

Easily upgrade your wood stove or fireplace blower with this versatile magnetic thermostat switch. Designed to attach directly to any metal stove surface—no bracket required—this thermostat automatically controls your blower, turning it on when your stove reaches 120°F and shutting it off when temperatures drop to around 90–110°F. This prevents cold air from being pushed into your living space during low-fire periods or overnight burns.

Key Features:

• Easy Magnetic Installation – Attaches directly to your stove’s surface without brackets or drilling
• Automatic Control – Activates blower fan at ~120°F (50°C) and turns off around 90–110°F (32–43°C)
• Comfort & Efficiency – Prevents cold air circulation when the stove cools
• Complete with Wiring – Includes extra wiring for easy integration into most blower fan systems

Specifications:

• Product Dimensions: 2" x 2" x 2"
• Item Weight: 1.44 oz
• Model Number: DN125
• Country of Origin: China

Ideal For:

• Wood stoves, pellet stoves, and fireplace blower fans needing automated temperature-based control
• Homeowners wanting to improve efficiency and comfort by preventing fans from running on cool stoves
• Retrofit blower kits that lack built-in thermostatic control

Fitment Note: The blower will not start until the thermostat reaches approximately 120°F, ensuring the fan only operates when the stove is producing adequate heat. Install only on a flat metal surface for proper magnetic contact and heat sensing.

Pairs well with: Fireplace Blowers

Enjoy hands-free blower control with the 4T120M Magnetic Thermostat.