--- product_id: 299106647 title: "Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black" brand: "keynice" price: "$30.77" currency: USD in_stock: true reviews_count: 5 category: "Keynice" url: https://www.desertcart.us/products/299106647-keynice-digital-thermometer-temperature-sensor-usb-power-supply-fahrenheit-degree store_origin: US region: United States of America --- # Blue backlight LCD USB powered 4-25V ±1℃ accuracy Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black **Brand:** keynice **Price:** $30.77 **Availability:** ✅ In Stock ## Summary > 🌡️ Stay ahead of the heat—know your environment like a pro! ## Quick Answers - **What is this?** Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black by keynice - **How much does it cost?** $30.77 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/299106647-keynice-digital-thermometer-temperature-sensor-usb-power-supply-fahrenheit-degree) ## Best For - keynice enthusiasts ## Why This Product - Trusted keynice brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Power:** Seamlessly powered via USB (4-25V), compatible with laptops, PCs, and USB adapters—no batteries needed. - • **Precision at a Glance:** Experience ultra-accurate temperature readings with ±1℃ precision for reliable monitoring. - • **Day or Night Visibility:** Vibrant blue backlit LCD ensures crystal-clear temperature display even in low-light or dark environments. - • **Flexible & Durable Design:** 1-meter sensor cable for optimal placement plus compact size fits discreetly anywhere you need it. - • **Versatile Temperature Range:** Measures from -58℉ to +230℉ (-50°C to +110°C), perfect for everything from pet care to automotive use. ## Overview The Keynice Digital Thermometer offers fast, highly accurate temperature readings (-58℉ to +230℉) with a crisp color LCD and blue backlight for easy viewing anytime. Powered conveniently via USB (4-25V), it’s designed for versatile use—from pets and greenhouses to vehicles and DIY projects. Its 1-meter sensor cable and compact form factor provide flexible installation options, making it an essential tool for millennial professionals who demand precision and style in their tech. ## Description Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black : desertcart.ae Review: Works great. Review: I installed this on my motorcycle so I can know the ambient temperature. The display is easy to read in all lighting conditions except when the sun is shining directly on it, so choose a mounting location accordingly. Also, the sensor has a very quick response time. This makes finding a suitable mounting location for it important. So far I haven't found the ideal location; when I come to a stop, heat from the engine causes the displayed temperature to slowly rise. Once I start moving and ambient air is once again flowing over the sensor the displayed temperature drops back to the correct value. The 3 foot sensor cable makes it pretty easy to try different mounting locations. For power I just cut off the USB plug and wired the power cord directly to a switched 12V wire on the bike, so the thermometer is powered only when the bike's ignition is on. I've mounted the display unit in a location that is not protected from rain. I've not been riding in the rain since installing it so I don't know how well it will do. Once I have some wet weather experience with it I'll update this review. Update 2025-07-14: After a few years, I'm still satisfied overall with this. I found the best place for the sensor is down on the fork slider inside the front fender. This prevents engine heat from reaching it, and gives me a fairly accurate reading of the temperature near the road, which is what I really want to know. As for weather resistance, that is this unit's weakness. After I've parked or ridden in moderate rain, the display starts showing 888. After it dries out, it starts working again. ## Features - 【Specification】①Size:1.89"x1.1"x0.67"; ②Temperature range: -58℉ to +230℉ (-50°C to +110°C) ③Accuracy: ±1℃; ④Measurement interval: 0.25S; ⑤ Input: DC 4 to 25V; ⑥ Cable: 1 meter; ⑦Temperature display unit: ℃/ ℉ switchable - 【USB power supply】 Power is supplied from USB, so you can use it by simply connecting it to a PC, laptop computer, or device equipped with a USB port - 【Excellent visibility】 Built-in blue backlight, which is the easier to see, you can clearly check the temperature even in the dark - 【Various uses】 For managing pets, car thermometers, greenhouses, PCs, water tanks, etc. It can also be used for DIY applications - 【After-sales service】We offer 12-month after-sales service, so if you have any questions, please feel free to let us know ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01H1RDJOI | | Item model number | AP-185-USB | | Manufacturer | KEYNICE | | Product Dimensions | 11 x 4 x 4 cm; 52 g | ## Product Details - **Age range (description):** Adult - **Brand:** KEYNICE - **Colour:** USB - **Included components:** An USB thermometer - **Special features:** High Accuracy ## Images ![Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black - Image 1](https://m.media-amazon.com/images/I/31REtew0ByL.jpg) ![Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black - Image 2](https://m.media-amazon.com/images/I/41+gl8WOXgL.jpg) ![Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black - Image 3](https://m.media-amazon.com/images/I/41YSozjoX3L.jpg) ![Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black - Image 4](https://m.media-amazon.com/images/I/41sgQDE2wNL.jpg) ![Keynice Digital Thermometer, Temperature Sensor USB Power Supply, Fahrenheit degree and Degrees Celsius color LCD Display, High Accurate-Black - Image 5](https://m.media-amazon.com/images/I/51SldeNy1tL.jpg) ## Questions & Answers **Q: Can you view the data over USB?** A: Thank you for your question.NO.The USB line just as a power function.Is designed for the convenience. **Q: where can you place the sensor inside the CPU? Near the processor? or anywhere in the motherboard?** A: It depends on what temperature measurement you wish to get reasons from. For CPU, you'll want to clamp it to the base of the heatsink and if really serious, use a little thermal glue between to sensor and heatsink for most accurate readings. Depending on your heatsink, you may be able to place the sensor between the blades of the heatsink, just be sure to get the sensor to touch the base for best results. If you want ambient temperature of internal heat of the computer, just connect it near the middle of the case not in the direct line of your airway ventilation track and don't let the sensor itself touch anything for best readings of internal computer heat. **Q: How long is the temp sensor wire?** A: About 3 '' or 36 inches **Q: Can we put the whole unit in an infrared dry sauna?** A: Mine are all at the tops of my aquariums so are subject to high humidity so I do not see why dryness would affect anything ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by C***R on 5 October 2025* Works great. ### ⭐⭐⭐⭐⭐ Review *by R***N on 3 January 2020* I installed this on my motorcycle so I can know the ambient temperature. The display is easy to read in all lighting conditions except when the sun is shining directly on it, so choose a mounting location accordingly. Also, the sensor has a very quick response time. This makes finding a suitable mounting location for it important. So far I haven't found the ideal location; when I come to a stop, heat from the engine causes the displayed temperature to slowly rise. Once I start moving and ambient air is once again flowing over the sensor the displayed temperature drops back to the correct value. The 3 foot sensor cable makes it pretty easy to try different mounting locations. For power I just cut off the USB plug and wired the power cord directly to a switched 12V wire on the bike, so the thermometer is powered only when the bike's ignition is on. I've mounted the display unit in a location that is not protected from rain. I've not been riding in the rain since installing it so I don't know how well it will do. Once I have some wet weather experience with it I'll update this review. Update 2025-07-14: After a few years, I'm still satisfied overall with this. I found the best place for the sensor is down on the fork slider inside the front fender. This prevents engine heat from reaching it, and gives me a fairly accurate reading of the temperature near the road, which is what I really want to know. As for weather resistance, that is this unit's weakness. After I've parked or ridden in moderate rain, the display starts showing 888. After it dries out, it starts working again. ### ⭐⭐⭐⭐⭐ Review *by J***R on 13 July 2024* I use this for my car's outside air temperature gage (the car doesn't have an OEM one). I used lamp cord to extend the sensor wire so I could get the sensor to the front of the car. It's a sensitive thermometer, so initially I would get major fluctuations (10°F or more) sitting at stop lights when heat would build up under the car. So I potted the sensor inside a short piece of thick-walled stainless steel tube with silicone, and this keeps the temperatures much more stable (2°F). I have had this installed now for nearly 4 years with no issues. I initially did an ice-bath test to measure it's accuracy, and it was within a degree of expected. I power it with a USB adapter in my cigarette lighter plug, and it's attached with Velcro tape to the dash (photos). ## Frequently Bought Together - KEYNICE Digital Thermometer, Aquarium Thermometer, Digital Temperature Gauge, Temperature Monitor with Sensor, USB Power Supply, ℉ and ℃ Switchable, LCD Display, USB Thermometer Indoor Outdoor - weideer Digital Thermometer Dual LED Display Fahrenheit to Centigrade Adjustable DC 4-28V -67~+248℉/-55～+120℃ High Accuracy Temperature Gauge Sensor with 2 Waterproof NTC Probes K-017 - UCTRONICS 0-167°F Fahrenheit Digital Temperature Meter Blue LED Display MF55 Type NTC Thermistor Temp Sensor 2-Wires Reverse Polarity Protection with Black Case --- ## 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.us/products/299106647-keynice-digital-thermometer-temperature-sensor-usb-power-supply-fahrenheit-degree](https://www.desertcart.us/products/299106647-keynice-digital-thermometer-temperature-sensor-usb-power-supply-fahrenheit-degree) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-10*