---
product_id: 30727143
title: "KEYNICE Digital Thermometer, Aquarium Thermometer, Digital Temperature Gauge, Temperature Monitor with Sensor, USB Power Supply, ℉ and ℃ Switchable, LCD Display, USB Thermometer Indoor Outdoor"
brand: "keynice"
price: "$34"
currency: NZD
in_stock: true
reviews_count: 13
category: "Keynice"
url: https://www.desertcart.nz/products/30727143-keynice-digital-thermometer-aquarium-thermometer-digital-temperature-gauge-temperature-monitor
store_origin: NZ
region: New Zealand
---

# Ultra-fast 0.25s response USB powered, plug & play Wide temp range -58℉ to 230℉ KEYNICE Digital Thermometer, Aquarium Thermometer, Digital Temperature Gauge, Temperature Monitor with Sensor, USB Power Supply, ℉ and ℃ Switchable, LCD Display, USB Thermometer Indoor Outdoor

**Brand:** keynice
**Price:** $34
**Availability:** ✅ In Stock

## Summary

> 🌟 Stay cool, stay precise — the thermometer that works as hard as you do!

## Quick Answers

- **What is this?** KEYNICE Digital Thermometer, Aquarium Thermometer, Digital Temperature Gauge, Temperature Monitor with Sensor, USB Power Supply, ℉ and ℃ Switchable, LCD Display, USB Thermometer Indoor Outdoor by keynice
- **How much does it cost?** $34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/30727143-keynice-digital-thermometer-aquarium-thermometer-digital-temperature-gauge-temperature-monitor)

## 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

- • **Instant insights:** Lightning-fast 0.25-second measurement interval keeps you ahead of environmental changes.
- • **Dual-unit display:** Switch easily between ℉ and ℃ to suit your preference or professional needs.
- • **Seamless USB power:** Plug into any USB port—PC, laptop, or power bank—for effortless, cable-free operation.
- • **Versatile monitoring:** Perfect for aquariums, pets, greenhouses, vehicles, and DIY projects—stay in control everywhere.
- • **Precision at a glance:** ±1℃ accuracy ensures you never miss the mark on temperature control.

## Overview

The KEYNICE Digital Thermometer offers professional-grade temperature monitoring with a broad range from -58℉ to 230℉, ±1℃ accuracy, and a rapid 0.25-second response time. USB-powered for universal compatibility, it features a clear LCD with blue backlight and switchable units (℉/℃), making it ideal for indoor and outdoor use across multiple applications including aquariums, pets, vehicles, and greenhouses.

## Description

desertcart.com: KEYNICE Digital Thermometer, Aquarium Thermometer, Digital Temperature Gauge, Temperature Monitor with Sensor, USB Power Supply, ℉ and ℃ Switchable, LCD Display, USB Thermometer Indoor Outdoor : Pet Supplies

Review: Good product - Works great.
Review: Works well on my motorcycle - 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 |
| Age Range (Description) | Adult |
| Best Sellers Rank | #57,253 in Pet Supplies ( See Top 100 in Pet Supplies ) #47 in Aquarium Thermometers |
| Brand | KEYNICE |
| Color | USB |
| Connectivity Technology | Usb |
| Customer Reviews | 4.5 4.5 out of 5 stars (941) |
| Date First Available | June 14, 2016 |
| Display Type | LCD |
| Included Components | An USB thermometer |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Is Discontinued By Manufacturer | No |
| Item Length | 1.89 Inches |
| Item Weight | 1.83 ounces |
| Item model number | AP-185-USB |
| Manufacturer | KEYNICE |
| Manufacturer Part Number | AP-185-BK |
| Model Name | AP-185-USB |
| Outer Material | Stainless Steel |
| Power Source | Usb Powered |
| Product Care Instructions | Wipe Clean |
| Response Time | 0.25 seconds |
| Reusability | Reusable |
| Special Feature | High Accuracy |
| Special Features | High Accuracy |
| Specification Met | CE |
| Style | Contemporary |
| UPC | 798863007228 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 230 Degrees Fahrenheit |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** KEYNICE
- **Color:** USB
- **Connectivity Technology:** Usb
- **Display Type:** LCD
- **Included Components:** An USB thermometer
- **Outer Material:** Stainless Steel
- **Product Care Instructions:** Wipe Clean
- **Special Feature:** High Accuracy
- **Specification Met:** CE

## Images

![KEYNICE Digital Thermometer, Aquarium Thermometer, Digital Temperature Gauge, Temperature Monitor with Sensor, USB Power Supply, ℉ and ℃ Switchable, LCD Display, USB Thermometer Indoor Outdoor - Image 1](https://m.media-amazon.com/images/I/61afQWvbQFL.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

### ⭐⭐⭐⭐⭐ Good product
*by C***R on October 5, 2025*

Works great.

### ⭐⭐⭐⭐⭐ Works well on my motorcycle
*by R***N on January 3, 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.

### ⭐⭐⭐⭐⭐ Accurate, Responsive, Durable
*by J***R on July 13, 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
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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-28*