--- product_id: 482687068 title: "HEATIT ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24 1PCS" brand: "heatit" price: "€ 35.12" currency: EUR in_stock: true reviews_count: 13 category: "Heatit" url: https://www.desertcart.hr/products/482687068-heatit-et-21-freeze-thermostatically-controlled-outlet-on-at-38f store_origin: HR region: Croatia --- # Supports up to 15A load Smart indicator light signals activation Auto ON @ 38°F / OFF @ 50°F HEATIT ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24 1PCS **Brand:** heatit **Price:** € 35.12 **Availability:** ✅ In Stock ## Summary > ❄️ Stay warm, save smart — never let the cold catch you off guard! ## Quick Answers - **What is this?** HEATIT ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24 1PCS by heatit - **How much does it cost?** € 35.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/482687068-heatit-et-21-freeze-thermostatically-controlled-outlet-on-at-38f) ## Best For - heatit enthusiasts ## Why This Product - Trusted heatit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted & Tested:** ETL approved with responsive customer support ensuring reliable performance. - • **Plug & Play Simplicity:** No installation hassle—just plug into any standard 120V outlet and go. - • **Energy-Smart Automation:** Turns off at 50°F to save energy and reduce your utility bills. - • **Versatile Heating Control:** Ideal for electric heaters, engine heaters, pipe heat tapes, and more. - • **Precision Freeze Protection:** Automatically powers heaters below 38°F to prevent costly pipe freezes. ## Overview The HEATIT ET-21 Freeze Thermostatically Controlled Outlet is a smart, plug-in device that automatically powers connected heaters below 38°F and shuts off at 50°F, protecting pipes and equipment from freezing. Supporting up to 15 amps and ETL approved, it’s perfect for RVs, dog houses, and industrial applications, combining energy efficiency with effortless installation. ## Description desertcart.com: HEATIT ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24 1PCS : Industrial & Scientific Review: Great for powering a heater light bulb in a RV Wet Bay. - Works perfectly and turns a small heat bulb on in low temperatures, to keep pipes from freezing in my RV wet bay. I'm happy with a Good brand, vs cheap knockoff. Review: Helpful customer service! - Bought the two pack to control heat lamps for a dog house. One of them didn't work and the customer service person was very helpful and quickly responded to get the issue resolved promptly. I appreciate that as much as the product working! ## Features - Thermostat control outlet with the smart indicator light: The indicator light turns on when it's below 38℉ and it has energized the outlet. - Energize below 38℉(3℃) and to turn off automatically at approximately 50℉(10℃). Automatically turns power on and off according to ambient temperature. Save energy and save money. - Easy installation: just plug this device into electrical outlet. Maximum 15 amps. ETL approved. Only for dry location. - Can be use for other applications: 120 VAC electric heaters, gas heater, Engine heaters, pipe heat tape, roof heating cable and so on. - Make a test when you received the product. Put it into the freezer for 45 minutes can RESET it. And then plug in and you will see the red light on the thermostat control. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09PV8TQL9 | | Best Sellers Rank | #11,108 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Temperature Controllers | | Brand Name | HEATIT | | Color | Et-24 | | Customer Reviews | 4.3 4.3 out of 5 stars (4,794) | | Display Type | lcd or led | | Included Components | NO | | Item Weight | 0.09 Kilograms | | Manufacturer | Zhukeshi | | Material Type | Plastic | | Unit Count | 1.0 Count | | Voltage | 120 Volts | ## Product Details - **Brand:** HEATIT - **Color:** Et-24 - **Item Weight:** 0.09 Kilograms - **Material:** Plastic - **Voltage:** 120 Volts ## Images ![HEATIT ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24 1PCS - Image 1](https://m.media-amazon.com/images/I/61cdOxAks4L.jpg) ## Available Options This product comes in different **Unit Count, Style** options. ## Questions & Answers **Q: Will this handle two 1500 watt ceramic heaters or do I need one for each?** A: This thermostat can't handle two 1500 watt heaters, but more importantly, your outlet also can't handle two 1500 watt heaters. You need to plug those into two different outlets served by different breakers, then obviously you'll need two different thermostat plugs. **Q: I am looking to use this to keep a small fig tree alive outside in a enclosed/ covered pot. Approx 6 by 6 with an 10 foot height? Thoughts** A: I'm sure you're aware the unit you're looking at is only a thermostat, not a heater. It does a good job of turning things on and off at temperatures listed in the description. Your fig tree's fate will be determined by (1) your winter climate -- how cold it gets, (2) the heat source you're plugging into the thermostat, and (3) the construction of the enclosure you'll be using -- insulation, wall materials, etc. In a 6x6x10 insulated structure, a 110-volt electric heater probably should work well, but, again, it will depend a lot on your local climate, in or out of the wind, and exposure to warmth of daytime sunlight. Lots of variables to consider. **Q: Can this be used outside to turn heating cables on? The info says "Only for dry location." and outdoors is wet!** A: Not designed for wet locations. You would have to put it in a box to protect it from water. **Q: Can this be used outside to turn heating cables on? The info says "Only for dry location." and outdoors is wet!** A: Am using mine outside in a well underground area. For a small heater.. (to prevent well pump freeze that already happened this year when I did not have this item). It is damp out there. You can use a thin plastic bag around it and seal the ends up.. hopefully the sensor will continue to function properly. Is just my opinion so buy and use if you think it will be a useful product. For me it functions well at the specified on/off temperatures, better than other thermostats and there are not too many products on the market to choose from. Just test this item each year before it gets cold out to make sure it still functions. (Put it in a bag in a freezer for 20 minutes then plug something into it and see if the plugged in item functions). ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for powering a heater light bulb in a RV Wet Bay. *by R***W on February 20, 2026* Works perfectly and turns a small heat bulb on in low temperatures, to keep pipes from freezing in my RV wet bay. I'm happy with a Good brand, vs cheap knockoff. ### ⭐⭐⭐⭐⭐ Helpful customer service! *by S***K on November 24, 2025* Bought the two pack to control heat lamps for a dog house. One of them didn't work and the customer service person was very helpful and quickly responded to get the issue resolved promptly. I appreciate that as much as the product working! ### ⭐⭐⭐⭐⭐ Works great *by S***S on March 28, 2026* It work great for our chickens plugged in their heat lamp and didn’t have to worry about them being cold ## Frequently Bought Together - HEATIT ET-24 Freeze Thermostatically Controlled Outlet - Thermo Cube Model TC-3: Thermostatically Controlled Outlet - On at 35-Degrees/Off at 45-Degrees - MAXKOSKO Freeze Thermostatically Controlled Outlet，Automatically Turn On Below 38 °F and Off Over 50 °F --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/482687068-heatit-et-21-freeze-thermostatically-controlled-outlet-on-at-38f](https://www.desertcart.hr/products/482687068-heatit-et-21-freeze-thermostatically-controlled-outlet-on-at-38f) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-24*