---
product_id: 633730820
title: "KETOTEK Digital Temperature Controller Thermostat Outlet Plug 120V with LCD Backlight, Heating Cooling Temperature Controlled Outlet 110V 15A with 3m Sensor"
brand: "ketotek"
price: "$53.74"
currency: USD
in_stock: true
reviews_count: 10
category: "Ketotek"
url: https://www.desertcart.us/products/633730820-ketotek-digital-temperature-controller-thermostat-outlet-plug-120v-with-lcd
store_origin: US
region: United States of America
---

# 3m high-precision NTC sensor 15A/120V max output power Wide temp range -40℉ to 248℉ KETOTEK Digital Temperature Controller Thermostat Outlet Plug 120V with LCD Backlight, Heating Cooling Temperature Controlled Outlet 110V 15A with 3m Sensor

**Brand:** ketotek
**Price:** $53.74
**Availability:** ✅ In Stock

## Summary

> 🌡️ Take control of your climate, effortlessly and precisely!

## Quick Answers

- **What is this?** KETOTEK Digital Temperature Controller Thermostat Outlet Plug 120V with LCD Backlight, Heating Cooling Temperature Controlled Outlet 110V 15A with 3m Sensor by ketotek
- **How much does it cost?** $53.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/633730820-ketotek-digital-temperature-controller-thermostat-outlet-plug-120v-with-lcd)

## Best For

- ketotek enthusiasts

## Why This Product

- Trusted ketotek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Multi-Use Mastery:** Perfect for everything from greenhouses to homebrewing—your all-in-one temperature guardian.
- • **Plug & Play Simplicity:** No wiring needed—just set your temps and let it automate heating/cooling flawlessly.
- • **Versatile 5-Mode Control:** Switch between temperature control and multiple timer modes for ultimate customization.
- • **Reliable & Safe Operation:** Fire-resistant build with power outage memory keeps your settings intact and secure.
- • **Crystal-Clear LCD Backlight:** Wide-angle, customizable backlight for effortless monitoring anytime, anywhere.

## Overview

The KETOTEK KT3100BL Digital Temperature Controller is a versatile, plug-in thermostat outlet with a wide temperature range (-40℉ to 248℉), a 3-meter high-precision sensor, and a bright LCD backlight. It supports 5 control modes, handles up to 15A/120V devices, and features a fire-resistant design with power outage memory, making it ideal for precise temperature management in diverse applications like greenhouses, incubators, and home heating.

## Description

Buy KETOTEK Digital Temperature Controller Thermostat Outlet Plug 120V with LCD Backlight, Heating Cooling Temperature Controlled Outlet 110V 15A with 3m Sensor: Everything Else - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Unexpected Use for Controlling a Room Heater Overnight When it's Very Cold Outside - I gave this item a 5 star review because it did work for my need to make a freezer work like a refrigerator over the holidays when the original freezer thermostat stopped working. However, it now does something more important for me. We use an electric heater overnight to keep our bedroom comfortable instead of using our HVAC propane heater which would heat half the house also and cost a lot more. Our old heater quit and most of the room heaters these days have electronic temperature controls that are very useful in their ECO mode. Unfortunately, when switching power levels and fan speeds several times during the night they make a lot of relay clicking and fan noise sounds for several seconds, enough to actually wake me up. Not good! So I bought a more old fashioned room heater with a mechanical thermostat, no beeps and no display light to brighten the bedroom. It only had one problem, the mechanical thermostat has about 6F difference between the turn on and turn off temperature (hysteresis) so you are either too warm or too cool multiple times per night. This unit solved my problem completely. This might have worked for the newer high tech heaters but when they lose power they do not automatically turn on with the settings in place before power was lost.
Review: This has worked great for our heater application - Working great so far. using it to control a Ceramic heater for my well pit. It have multiple settings and ways to control what you need for your application as well, not just on or off.

## Features

- User-Friendly LCD Display for Clear Visibility – Wide-viewing-angle LCD with backlight ensures easy reading in low light or from any angle. Press any key to activate the backlight; press DOWN to turn off the backlight. Customize backlight duration: 10 min, 1 hr, 4 hrs, 8 hrs, or always on.
- Easy Setup, No Wiring Needed – Just plug in your device, set your desired start/stop temperatures, and let the KT3100BL thermostat outlet plug take over! It automatically switches between heating and cooling modes based on your settings. Wide temperature range: -40℉~248℉ (-40℃~120℃) for versatile heating or cooling applications.
- 5 Modes for Versatile Use - Switch 5 modes instantly with the MODE button: Temperature Control mode, F01 cycler timer mode, F02 Countdown ON mode, F03 Countdown OFF mode, F04 Countdown ON and Countdown OFF mode. Set range: 0~99 hours 59 minutes. Please note: Temperature Control Mode cannot run simultaneously with other modes.
- Safe and reliable design - Made in fire-resistant and durable materials for long-term stable operation, this thermostat plug outlet uses a 3-meter high-precision NTC 10K temperature sensor to monitor temperature in real-time, ensuring accurate and precise temperature control. Your settings are safely saved even during a power outage, no need to set again after power restoration.
- Wide application. This thermostat plug outlet works in both Fahrenheit and Celsius. It supports a temperature calibration function to ensure that the displayed temperature matches the actual temperature. This temperature controller is suitable for greenhouse, reptile, incubator, terrarium, freezer, refrigerator, heater, fridge, homebrew, vivarium, fermentation, heat mat, and other temperature-controlled system. Output: Max 15A/120V.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D3X3JSKN |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #5,603 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Temperature Controllers |
| Customer Reviews | 4.5 4.5 out of 5 stars (827) |
| Date First Available | May 5, 2024 |
| Display Style | LCD |
| Included Components | 1*Thermostat Plug Outlet; 1*Manual |
| Item Weight | 6.9 ounces |
| Item model number | KT3100BL |
| Manufacturer | KETOTEK |
| Material | Plastic |
| Package Dimensions | 5.24 x 3.31 x 2.64 inches |
| Part Number | KT3100BL US |
| Style | Backlit Style |

## Product Details

- **Brand:** KETOTEK
- **Display Type:** LCD
- **Manufacturer:** KETOTEK
- **Material:** Plastic
- **Operating Temperature:** 248 Degrees Fahrenheit

## Images

![KETOTEK Digital Temperature Controller Thermostat Outlet Plug 120V with LCD Backlight, Heating Cooling Temperature Controlled Outlet 110V 15A with 3m Sensor - Image 1](https://m.media-amazon.com/images/I/517Lt1GRJ5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Unexpected Use for Controlling a Room Heater Overnight When it's Very Cold Outside
*by J***K on January 8, 2026*

I gave this item a 5 star review because it did work for my need to make a freezer work like a refrigerator over the holidays when the original freezer thermostat stopped working. However, it now does something more important for me. We use an electric heater overnight to keep our bedroom comfortable instead of using our HVAC propane heater which would heat half the house also and cost a lot more. Our old heater quit and most of the room heaters these days have electronic temperature controls that are very useful in their ECO mode. Unfortunately, when switching power levels and fan speeds several times during the night they make a lot of relay clicking and fan noise sounds for several seconds, enough to actually wake me up. Not good! So I bought a more old fashioned room heater with a mechanical thermostat, no beeps and no display light to brighten the bedroom. It only had one problem, the mechanical thermostat has about 6F difference between the turn on and turn off temperature (hysteresis) so you are either too warm or too cool multiple times per night. This unit solved my problem completely. This might have worked for the newer high tech heaters but when they lose power they do not automatically turn on with the settings in place before power was lost.

### ⭐⭐⭐⭐⭐ This has worked great for our heater application
*by A***Y on December 17, 2025*

Working great so far. using it to control a Ceramic heater for my well pit. It have multiple settings and ways to control what you need for your application as well, not just on or off.

### ⭐⭐⭐⭐⭐ Great air temp probe
*by T***S on November 11, 2025*

Bought this to regulate the temperature of a towel warmer i made. It has been great. Easy to use, with a very long temperature probe wire. It is accurate in the high low temp setting and easy to change when necessary. Nice thing about the probe is it measure air temp, without having to actually attach to anything, (metal to metal).

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-13*