1. Introduction
Thank you for choosing the NOKLEAD Digital Thermometer Hygrometer. This device is designed to accurately monitor indoor temperature and humidity, providing essential information for maintaining a comfortable and healthy living environment. Its compact design, large LCD display, and multiple mounting options make it a versatile tool for any home or office.
Front view of the white digital thermometer hygrometer displaying temperature, humidity, time, and date.
2. Safety Information
- Keep the device away from water and excessive moisture.
- Avoid exposing the device to direct sunlight or extreme temperatures.
- Do not attempt to disassemble or modify the device.
- Keep batteries out of reach of children. If swallowed, seek medical attention immediately.
- Dispose of used batteries according to local regulations.
3. Package Contents
- 1 x NOKLEAD Digital Thermometer Hygrometer (Model 5253)
- 1 x User Manual (This document)
For a detailed user manual in PDF format, please refer to the official document: User Manual (PDF)
4. Product Features
- Large LCD Display: 3.34-inch screen for clear visibility of readings.
- Temperature Monitoring: Displays temperature in Celsius (°C) or Fahrenheit (°F).
- Humidity Monitoring: Displays relative humidity (%).
- Comfort Level Indicator: Visual cues (DRY, COMFORT, WET) based on humidity levels.
- Time and Date Display: Includes a clock with 12/24 hour conversion.
- Fast Refresh Rate: Updates readings every 10 seconds.
- Multiple Mounting Options: Features a durable stand, strong magnet, and wall sticker for flexible placement.
- Power Source: Operates on a CR2032 button battery.
Key features of the thermometer hygrometer.
5. Setup
5.1 Battery Installation
- Locate the battery compartment on the back of the device.
- Open the battery cover.
- Insert one CR2032 button battery, ensuring the correct polarity (+/-).
- Close the battery cover securely.
5.2 Initial Power-On
Upon battery installation, the device will power on automatically and display current temperature, humidity, time, and date.
5.3 Setting Time and Date
The device features buttons on the back for setting time and date. Refer to the video demonstration for a visual guide.
Video demonstrating how to set up the device, including time/date and temperature unit switching.
5.4 Mounting Options
The device offers three convenient mounting options:
- Durable Stand: Use the integrated foldable stand for desktop placement.
- Strong Magnet: The back of the device is magnetic, allowing it to be attached to metallic surfaces like refrigerators.
- Wall Sticker: An adhesive pad is provided for mounting on non-metallic walls or surfaces.
Multiple mounting options for versatile placement.
6. Operating Instructions
6.1 Reading Temperature and Humidity
The current temperature and humidity are continuously displayed on the large LCD screen. The readings refresh every 10 seconds for up-to-date information.
6.2 Understanding the Comfort Level Indicator
The device features a color-coded comfort level indicator to quickly assess the indoor environment:
- DRY: Indicates humidity levels are ≤ 29% (at any temperature).
- COMFORT: Indicates optimal conditions with temperature between 18℃ and 26℃, and humidity between 30% and 69%.
- WET: Indicates humidity levels are ≥ 70% (at any temperature).
Comfort level indicator with corresponding humidity ranges.
6.3 Switching Temperature Units (°C/°F)
Press the dedicated button on the back of the device to toggle between Celsius (°C) and Fahrenheit (°F) temperature displays.
6.4 Switching Time Format (12/24 Hour)
Press the appropriate button on the back to switch between 12-hour (AM/PM) and 24-hour time formats.
7. Maintenance
7.1 Battery Replacement
When the display becomes dim or stops functioning, it's time to replace the CR2032 button battery. Follow the battery installation steps in Section 5.1.
7.2 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.
7.3 Storage
If storing the device for an extended period, remove the battery to prevent leakage and damage.
8. Troubleshooting
- No display or dim display: Check battery polarity or replace the CR2032 battery.
- Inaccurate readings: Ensure the device is placed in a stable environment, away from direct heat sources, vents, or extreme drafts. Allow a few minutes for readings to stabilize after placement or significant environmental changes.
- Buttons not responding: Try removing and reinserting the battery to reset the device.
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | 5253 |
| Measure Type | CU50 |
| Display Type | DIGITAL (LCD) |
| Display Size | 2.0 - 3.9 Inches |
| Temperature Range | -9.9℃ to 60℃ (14.18˚F to 140˚F) |
| Temperature Accuracy | ±1℃ |
| Humidity Range | 20% to 95% |
| Humidity Accuracy | ±5%RH |
| Power Type | Button Battery (CR2032) |
| Refresh Rate | 10 seconds |
| Style | Standing and Wall Hanging |
| Dimensions (approx.) | Length: 8cm, Width: 8cm, Height: 2cm |
| Weight (approx.) | 0.084 kg |
Temperature and humidity accuracy details.
10. User Tips
- Battery Life: The CR2032 battery typically lasts for several months, but actual duration may vary based on usage and environmental conditions. It's advisable to keep a spare battery on hand.
- Date Format: The device supports switching between 12-hour and 24-hour time formats, which can be adjusted using the buttons on the back.
- Placement: For the most accurate readings, place the hygrometer in a central location within the room, away from direct sunlight, heating/cooling vents, or open windows.
11. Warranty and Support
For warranty information and customer support, please refer to the seller's policies or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.
