---
product_id: 482687068
title: "ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24"
brand: "heatit"
price: "VT7054"
currency: VUV
in_stock: true
reviews_count: 13
category: "Heatit"
url: https://www.desertcart.vu/products/482687068-et-21-freeze-thermostatically-controlled-outlet-on-at-38f-off
store_origin: VU
region: Vanuatu
---

# Smart indicator light Max 15A power handling Auto ON/OFF @ 38℉/50℉ ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24

**Brand:** heatit
**Price:** VT7054
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay chill, not frozen — smart heat control that works while you relax!

## Quick Answers

- **What is this?** ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24 by heatit
- **How much does it cost?** VT7054 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/482687068-et-21-freeze-thermostatically-controlled-outlet-on-at-38f-off)

## 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

- • **Reliable & Certified:** ETL approved with a self-locking system for safe, dry location use.
- • **Plug & Play Simplicity:** No installation hassle—just plug into any standard outlet and go.
- • **Energy-Saving Automation:** Turns off at 50℉ to cut unnecessary power use and lower bills.
- • **Precision Freeze Control:** Automatically powers devices below 38℉ to prevent freezing damage.
- • **Versatile Heating Compatibility:** Supports electric heaters, engine heaters, pipe heat tape, and more.

## Overview

The ET-24 Freeze Thermostatically Controlled Outlet is a compact, ETL-approved device that automatically powers connected heaters below 38℉ and shuts off at 50℉, optimizing energy use and protecting equipment from freezing. Ideal for outdoor and cold weather applications, it supports up to 15 amps and features a smart indicator light for easy monitoring. Simple plug-in installation makes it perfect for professionals seeking reliable, automated temperature control.

## Description

Buy HEATIT ET-24 Freeze Thermostatically Controlled Outlet: Temperature Controllers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Perfect for temperature control and keeping the ice off of your small ponds - We have a large above ground fish tank so to speak outside. We typically run one or two heaters to keep the top open with aerators on the bottom. This worked very well to turn them on.
Review: Works great - This is an awesome gadget. We use it for chicken coop and dog heaters. Great price and saves on electricity bill by not running when not needed.

## 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 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #14,236 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17 in Temperature Controllers |
| Customer Reviews | 4.2 4.2 out of 5 stars (388) |
| Date First Available | January 6, 2022 |
| Included Components | NO |
| Item Package Quantity | 1 |
| Item Weight | 2.99 ounces |
| Item model number | ET-24 |
| Manufacturer | Zhukeshi |
| Mounting Type | Surface Mount |
| Part Number | ET-24 |
| Power Source | Corded Electric |
| Product Dimensions | 1.38 x 3.78 x 1.06 inches |
| Special Features | Self-locking system |
| Style | ET-24 |
| Usage | outdoor use, freezer storage, cold weather applications |

## Product Details

- **Brand:** HEATIT
- **Color:** Et-24
- **Display Type:** lcd or led
- **Material:** Plastic
- **Voltage:** 120 Volts

## Images

![ET-21 Freeze Thermostatically Controlled Outlet On at 38F /Off at 50F ET-24 - Image 1](https://m.media-amazon.com/images/I/61cdOxAks4L.jpg)

## 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

### ⭐⭐⭐⭐⭐ Perfect for temperature control and keeping the ice off of your small ponds
*by D***2 on January 28, 2026*

We have a large above ground fish tank so to speak outside. We typically run one or two heaters to keep the top open with aerators on the bottom. This worked very well to turn them on.

### ⭐⭐⭐⭐⭐ Works great
*by R***S on December 30, 2025*

This is an awesome gadget. We use it for chicken coop and dog heaters. Great price and saves on electricity bill by not running when not needed.

### ⭐⭐⭐⭐⭐ 2 of the 3 are not working
*by S***Y on December 15, 2023*

2 of the 3 pieces I ordered are not working. Unable to return. They were in use less than a few weeks.

## 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

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-12*