YFL YFL-KD40 Digital Hygrometer Thermometer Indicator

( Brand: Yfl ), ( Manufacturer Part Number: YFL-KD40 ), ( Part Type: Indoor Thermometer Indicator )

Review YFL Digital Hygrometer Thermometer Indoor Comfort Indicator

Introducing the YFL YFL-KD40 Digital Hygrometer Thermometer Indicator, an essential tool for maintaining optimal environmental conditions in various settings. This compact and versatile device is designed to provide accurate and reliable readings for both temperature and humidity levels.

The YFL-KD40 features a large, backlit LCD screen that displays the current temperature and humidity levels in clear, easy-to-read digits. The screen automatically adjusts the brightness level based on the surrounding light conditions, ensuring that the readings are always visible.

The hygrometer function of this device is ideal for monitoring humidity levels in environments such as greenhouses, laboratories, or even at home. The temperature range for this hygrometer is from -10 C to 50 C (-14 F to 122 F), while the humidity range is from 0% to 99% RH. The temperature and humidity readings are updated every second, providing real-time data.

The thermometer function of the YFL-KD40 is perfect for measuring temperature levels in various environments. It can be used in temperatures ranging from -40 C to 70 C (-40 F to 158 F). With an accuracy of 1 C for temperature readings and 3% RH for humidity readings, you can trust that the readings provided by this device are highly accurate.

The YFL-KD40 Digital Hygrometer Thermometer Indicator comes with a built-in data logging function that allows you to record and store up to 20 sets of temperature and humidity data. This feature is particularly useful for monitoring environmental conditions over extended periods or for identifying trends or patterns.

The device is compact in size, making it easy to carry and transport. It also comes with a magnetic base and a removable probe, allowing for various mounting options. The probe can be easily detached and attached to other surfaces, providing flexibility in measuring temperature and humidity readings in different locations.

The YFL YFL-KD40 Digital Hygrometer Thermometer Indicator is powered by two AAA batteries (not included). It automatically turns off after 10 minutes of inactivity to conserve battery life. The device also features an alarm function that can be set to alert you when temperature or humidity levels reach a predetermined threshold, making it an excellent tool for monitoring and maintaining optimal environmental conditions.

The YF-L YF-L KD40 Digital Hygrometer Thermometer is a versatile and compact device designed to measure temperature and humidity levels. Here are some pros and cons that may help you decide whether to purchase this product:

1. Dual Functionality: The YF-L KD40 is both a hygrometer and a thermometer, allowing you to measure temperature and humidity levels with a single device.

2. Compact Design: Its small and portable size makes it easy to carry around and use in different locations.

3. LCD Display: The large and clear LCD display shows temperature and humidity readings, making it easy to read even from a distance.

4. Automatic Calibration: The device automatically calibrates, ensuring accurate readings.

5. Alarm Feature: The YF-L KD40 has an alarm feature that alerts you when temperature or humidity levels exceed a set limit.

1. Battery Life: The battery life of the device is relatively short, and you may need to replace the batteries frequently.

2. Limited Accuracy: While the YF-L KD40 is generally accurate, it may not provide the same level of accuracy as more expensive devices.

3. Lack of Data Logging: The device does not have the ability to log temperature and humidity data over time.

The YF-L YF-L KD40 Digital Hygrometer Thermometer is an excellent choice for those who need to measure temperature and humidity levels on the go. Its compact size, dual functionality, and large LCD display make it a convenient and practical solution. However, if you require high accuracy or data logging capabilities, you may want to consider more expensive options.

If you are looking for an affordable and portable temperature and humidity measurement device, the YF-L YF-L KD40 Digital Hygrometer Thermometer is an excellent choice. It offers accurate readings, automatic calibration, and an easy-to-use LCD display. However, keep in mind that it may not provide the same level of accuracy or features as more expensive devices, and the battery life may be a limitation.

Details:

Dual - Function Monitoring:Simultaneously measures temperature and humidity, providing real time data for optimal environmental control in homes, greenhouses, humidors, incubators, more. Manufacturer: YFL. Simple Operation Long Battery Life:One - touch operation makes it user friendly for all ages. Compact Portable Design:Ultra - small and lightweight, this mini hygrometer thermometer can be easily placed on a desk, hung wall, or carried around, fitting seamlessly into any space.

High Accuracy Fast Response:Equipped with a precise sensor for accurate temperature readings 1C/2F and humidity measurements 2%RH, delivering instant results quick adjustments. Batteries: 1 AA batteries required. Easy - to Read LCD Display:Features a large, clear screen with bold digits, ensuring effortless visibility of temperature and humidity levels from distance.

part #: yfl-kd40 prices

• $10.07-$10.19

specifications thermoditto:

• brand: Yfl
• mpn: Yfl-kd40
• part type: Indoor Thermometer Indicator

payments thermoditto:

• other
• credit card: Discover
• wallet: Google-pay

offer thermoditto:

• sold: 0
• started: January 10, 2026
• options: Ship-to-home
• quantity: 2
• availability: In Stock

returns thermoditto:

• policy: Returns Accepted
• paid by: Seller
• method: Money back
• time: 30 Days

seller thermoditto:

• rating: 99.8%
• # reviews: 565
• city: San Bernardino, CA

general thermoditto:

• condition: New
• Heating, Cooling Air > Thermostats > Programmable Thermostats

shipping thermoditto:

• service: Expedited
• transit: 4-10 Days
• cost: $0.00
• type: Fixed
• class: Expedited

Yfl YFL-KD40 Is Similar To:

• Yfl Yfl-kd30 Digital Hygrometer With Comfort Indicator Indoor Room Temperature Monitor (66.7% similar) Dual - function monitoring:simultaneously measures temperature and humidity, providing real time data for optimal environmental control in homes, greenhouses, humidors, incubators, more. Package dimensions: 1.97 x 0.67 inches; 0.63 ounces. Simple operation long battery life:one - touch operation...(August 7th, 2025)