1. Introduction
Thank you for choosing the NOKLEAD Indoor Thermometer Hygrometer. This device is designed to provide accurate and real-time measurements of indoor temperature and humidity, along with a convenient clock and calendar display. Its compact design and multiple mounting options make it suitable for various environments, helping you maintain optimal living conditions.
The NOKLEAD Indoor Thermometer Hygrometer features a clear LCD display showing current temperature, humidity, comfort level, time, and date.
2. Safety Information
- Do not place the device in environments with extremely high or low temperatures, as this may damage electronic components and plastics.
- Avoid exposing the device to direct sunlight or excessive moisture.
- Keep out of reach of children.
- Remove batteries if the device will not be used for an extended period (several months).
3. Package Contents
- NOKLEAD Indoor Thermometer Hygrometer x 1
- Spare CR2032 Battery x 1
- Adhesive Metal Pad x 1
- User Manual x 1
4. Product Overview
The NOKLEAD Indoor Thermometer Hygrometer is equipped with a 3.34-inch LCD display for easy readability. It provides fast and accurate readings, refreshing every 10 seconds.
This device combines a thermometer and hygrometer, offering a comfort indicator, quick 10-second refresh rate, and options to switch between Celsius/Fahrenheit and 12/24 hour formats. It is powered by a CR2032 battery and displays the date.
4.1. Air Comfort Indicator
The comfort level icon on the screen clearly indicates the home environment based on relative humidity (RH):
- Dry (Orange): Humidity is less than 30%.
- Comfort (Green): Humidity is between 30% and 69%.
- Wet (Blue): Humidity is above 70%.
The comfort level indicator visually represents the indoor environment, prompting adjustments for a healthier living space.
5. Setup
5.1. Battery Installation
The device comes with 2 x CR2032 button cell batteries. To install or replace batteries:
- Locate the battery compartment on the back of the device.
- Open the battery cover.
- Insert the CR2032 batteries, ensuring correct polarity (+/-).
- Close the battery cover securely.
5.2. Setting Time and Date
Use the buttons on the back of the device to set the time and date:
- Press the 'SET' button to cycle through time, month, and day settings.
- Use the '+' and '-' buttons to adjust the values.
- Press the '-' button to switch between 12-hour and 24-hour display formats.
5.3. Switching Temperature Units
To switch between Celsius (°C) and Fahrenheit (°F), press the '+' button.
The back of the device features a magnetic area for easy attachment, a foldable kickstand, and control buttons for setting the time, date, and switching between Celsius and Fahrenheit.
5.4. Mounting Options
The device offers three convenient mounting options:
- Desktop Stand: Utilize the built-in foldable kickstand to place the device on any flat surface.
- Magnet Attaching: The device has a strong magnet on its back, allowing it to be attached to metallic surfaces like refrigerators.
- Wall Stick: Use the provided adhesive metal pad to stick the device to a wall. For stronger adhesion, wait 24 hours after gluing the metal pad to the wall before attaching the device.
The thermometer offers versatile placement options including magnetic attachment to metal surfaces, adhesive mounting for walls, and a built-in kickstand for desktop use.
6. Operating Instructions
6.1. Reading Temperature and Humidity
The large LCD display shows the current temperature and relative humidity. Readings refresh every 10 seconds to provide up-to-date information.
6.2. Understanding Comfort Levels
Refer to the color-coded comfort indicator (Dry, Comfort, Wet) to quickly assess the indoor environment and determine if adjustments to humidifiers or dehumidifiers are needed.
6.3. Calibration Function
The device features an upgraded calibration function. If product placement or environmental factors impact data accuracy, you can calibrate the sensor for the most accurate humidity and temperature data. (Temperature: Max ±5°C/±41°F; Humidity: ±10%RH.) Refer to the full user guide (PDF) for detailed calibration steps.
7. Maintenance
- Cleaning: Wipe the device gently with a soft, dry cloth. Do not use abrasive cleaners or immerse in water.
- Battery Replacement: Replace the CR2032 batteries when the display dims or stops functioning. Each battery typically lasts 8-12 months.
- Storage: If storing the device for several months, remove the batteries to prevent leakage and damage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low battery or incorrect battery installation. | Replace batteries with new CR2032 cells, ensuring correct polarity. |
| Inaccurate readings. | Device placement or environmental factors. | Relocate the device to a more stable environment. Use the calibration function if necessary. |
| Time/Date incorrect. | Not set or reset after battery change. | Follow instructions in Section 5.2 to set time and date. |
9. Specifications
- Product Dimensions: 2.76 x 2.76 x 0.51 inches
- Item Weight: 2.12 ounces
- Model Number: 5253T-W
- Batteries: 1 CR2032 batteries required (included)
- Temperature Range: 14.2°F-140°F (-9.9°C-60°C)
- Temperature Accuracy: ±2°F (1°C)
- Humidity Range: 10%-95% RH
- Humidity Accuracy: ±3%RH
- Display Type: LCD
- Special Feature: Calendar, Clock, Comfort Indicator, Fast Refresh
10. Product Videos
NOKLEAD Indoor Thermometer Hygrometer Overview
Official product video demonstrating the features and usage of the NOKLEAD Indoor Thermometer Hygrometer, including its display and various applications.
NOKLEAD Upgraded Indoor Thermometer Hygrometer 5253T
An official video showcasing the upgraded features and design of the NOKLEAD Indoor Thermometer Hygrometer Model 5253T, highlighting its accuracy and ease of use.
11. Warranty and Support
NOKLEAD is committed to providing high-quality products. If you encounter any issues with your humidity reader instrument, please contact us directly. We are willing to provide the best solution for you.
For further assistance, please refer to the official user guide (PDF) available online or contact NOKLEAD customer support.
