--- product_id: 633730820 title: "KT3100BL" brand: "ketotek" price: "€ 42.64" currency: EUR in_stock: true reviews_count: 8 category: "Ketotek" url: https://www.desertcart.pt/products/633730820-kt3100bl store_origin: PT region: Portugal --- # 5 versatile timer & control modes Backlit LCD with customizable timer Wide temp range -40℉ to 248℉ KT3100BL **Brand:** ketotek **Price:** € 42.64 **Availability:** ✅ In Stock ## Summary > 🌟 Take control of your climate—smart, sleek, and always on point! ## Quick Answers - **What is this?** KT3100BL by ketotek - **How much does it cost?** € 42.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/633730820-kt3100bl) ## 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-Mode Flexibility:** Switch between 5 timer and temperature control modes to perfectly match your unique application needs. - • **Customizable Backlit LCD:** Wide-angle, easy-to-read display with adjustable backlight duration for visibility anytime, anywhere. - • **Effortless Plug & Play Setup:** No wiring needed—just plug in, set your desired temps, and let it handle the rest automatically. - • **Precision Temperature Control:** 3m high-precision NTC sensor ensures real-time, accurate monitoring for flawless heating or cooling. - • **Built for Safety & Reliability:** Durable, fire-resistant ABS housing with saved settings during power outages for uninterrupted performance. ## Overview The KETOTEK KT3100BL Digital Temperature Controller is a versatile 120V thermostat outlet plug featuring a wide temperature range (-40℉ to 248℉), a 3-meter high-precision sensor, and a user-friendly backlit LCD display. Designed for easy plug-and-play use, it offers 5 customizable modes for heating and cooling applications, making it ideal for greenhouses, incubators, aquariums, and more. Built with fire-resistant materials and power outage memory, it ensures safe, reliable, and precise temperature management. ## Description Buy KETOTEK Digital Temperature Controller Thermostat Outlet Plug 120V with LCD Backlight, Heating Cooling Temperature Controlled Outlet 110V 15A with 3m Sensor: Incubator Accessories - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Works for my use case. - Five stars because I've not encountered its reportedly shortcomings, as I'm only using a simple temperature on/off function (not timed). Another reviewer studied the unit ad nauseam, and provided revised instructions. I strongly recommend you find that review as a supplement. I can probably use an AI to merge the text, integrate his with the manufacturer's poor guidebook and output a 'new' instruction manual. 😆 I have its temperature probe affixed to the UV lamp on my RO system with thermal tape and Velcro, so that the lamp isn't running 24/7 when the water isn't moving, as that segment gets pretty hot. Some say the UV lamps will last longer if they're not cycled on and off. I suspect it might last longer if it's not getting so bloody hot when there's no water to cool it. In any case, what I spend on replacement lamps I might save in power reduction as an offset. 🤷‍♀️ Review: Great air temp probe - 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). ## 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 | | Best Sellers Rank | #38,590 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #38 in Temperature Controllers | | Brand | KETOTEK | | Brand Name | KETOTEK | | Customer Reviews | 4.5 out of 5 stars 71 Reviews | | Display Type | LCD | | Included Components | 1*Thermostat Plug Outlet; 1*Manual | | Manufacturer | KETOTEK | | Material | Acrylonitrile Butadiene Styrene (ABS) | | Material Type | Acrylonitrile Butadiene Styrene (ABS) | | Model | KT3100BL | | Number of Items | 1 | | Operating Temperature | 248 °F | | Part Number | KT3100BL US | | Unit Count | 1 Count | ## Product Details - **Brand:** KETOTEK - **Display Type:** LCD - **Material:** Acrylonitrile Butadiene Styrene (ABS) - **Operating Temperature:** 248 °F - **Unit Count:** 1 Count ## Images ![KT3100BL - Image 1](https://m.media-amazon.com/images/I/517Lt1GRJ5L.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works for my use case. *by T***© on May 30, 2026* Five stars because I've not encountered its reportedly shortcomings, as I'm only using a simple temperature on/off function (not timed). Another reviewer studied the unit ad nauseam, and provided revised instructions. I strongly recommend you find that review as a supplement. I can probably use an AI to merge the text, integrate his with the manufacturer's poor guidebook and output a 'new' instruction manual. 😆 I have its temperature probe affixed to the UV lamp on my RO system with thermal tape and Velcro, so that the lamp isn't running 24/7 when the water isn't moving, as that segment gets pretty hot. Some say the UV lamps will last longer if they're not cycled on and off. I suspect it might last longer if it's not getting so bloody hot when there's no water to cool it. In any case, what I spend on replacement lamps I might save in power reduction as an offset. 🤷‍♀️ ### ⭐⭐⭐⭐⭐ 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). ### ⭐⭐⭐⭐⭐ Exactly as described very nice!! 👍 👍 *by J***S on November 15, 2025* This thing could not be better I’m using it for a deep freezer live well set up. It has preformed flawlessly! Very easy set up, intuitive and a bright screen I’m extremely pleased with this product. --- ## 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.pt/products/633730820-kt3100bl](https://www.desertcart.pt/products/633730820-kt3100bl) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-12*