1. Introduction
This manual provides detailed instructions for the operation and maintenance of your DOOMAY Digital Indoor Thermometer Hygrometer, Model 5294. This device is designed to accurately monitor indoor temperature and humidity levels, offering essential environmental data for various settings.
Please read this manual thoroughly before using the product to ensure proper function and longevity.
2. Product Features
- Accurate Monitoring: Provides precise temperature and humidity readings, refreshing every 10 seconds.
- Wide Measurement Range: Temperature range of -9.9℃ to 60℃ (14.2°F to 140°F) and humidity range of 10% to 99%.
- Calibratable Readings: Allows manual calibration for specific environments to ensure optimal accuracy.
- Clear LCD Display: Features large digits for easy readability and three comfort level icons (dry, comfortable, humid).
- Multiple Mounting Options: Includes a foldable stand, magnetic backing, and an adhesive metal pad for wall mounting.
- Date and Time Display: Shows current time, month, and date, with selectable 12-hour or 24-hour format.
- Battery Powered: Operates on a single CR2450 button cell battery with a low battery indicator.
3. Package Contents
- DOOMAY Digital Indoor Thermometer Hygrometer (Model 5294)
- CR2450 Button Cell Battery (pre-installed or included separately)
- Adhesive Metal Pad (for wall mounting)
- User Manual (this document)
4. Setup
4.1 Battery Installation
- Locate the battery compartment cover on the back of the device.
- Remove the cover.
- Insert one CR2450 button cell battery, ensuring the correct polarity (+/-).
- Replace the battery compartment cover.
The device will power on automatically and display current temperature, humidity, date, and time.
4.2 Initial Placement
Place the device in your desired location. Avoid placing it near heat sources, direct sunlight, or areas with extreme drafts, as this may affect accuracy.
Figure 1: Front view of the DOOMAY Digital Indoor Thermometer Hygrometer.
5. Operating Instructions
5.1 Temperature Unit Selection
Press the "▲" button located on the back of the device to switch the temperature unit between Celsius (℃) and Fahrenheit (℉).
5.2 Time Format Selection
Press the "▼" button located on the back of the device to switch the time format between 12-hour and 24-hour display.
5.3 Comfort Level Indicator
The device displays one of three face icons to indicate the current comfort level based on humidity:
- Sad Face: Indicates dry conditions.
- Neutral Face: Indicates humid conditions.
- Smiling Face: Indicates comfortable conditions.
Figure 2: Comfort Level Indicator explanation.
6. Calibration
The device supports manual calibration to fine-tune temperature and humidity readings for specific environments. This feature allows for more precise data collection in your chosen location.
- Calibration Range for Temperature: ±5°C / ±9°F
- Calibration Range for Humidity: ±10%Rh
Refer to the specific calibration instructions provided with your device or contact customer support for detailed steps on how to perform manual calibration.
7. Mounting Options
The DOOMAY Digital Indoor Thermometer Hygrometer offers versatile placement options:
- Foldable Stand: Use the integrated foldable stand on the back of the device for tabletop placement.
- Magnetic Backing: The device features a magnetic back, allowing it to be attached to metallic surfaces like refrigerators.
- Wall Mounting: Utilize the included adhesive metal pad to mount the device on a non-metallic wall surface. Ensure the surface is clean and dry before applying the adhesive pad.
Figure 3: Examples of suitable placement locations for the device.
8. Specifications
| Specification | Value |
|---|---|
| Model Number | 5294 |
| Dimensions (L x W x H) | 8.7 x 6.5 x 1.3 cm (3.43 x 2.58 x 0.51 inches) |
| Weight | 90 Grams |
| Temperature Range | -9.9℃ to 60℃ (14.2°F to 140°F) |
| Temperature Accuracy | ±1℃ |
| Humidity Range | 10% to 99% RH |
| Humidity Accuracy | ±5% RH |
| Refresh Rate | Every 10 seconds |
| Battery Type | 1 x CR2450 Button Cell (included) |
| Mounting Options | Foldable stand, Magnet, Wall mount (with adhesive pad) |
Figure 4: Product dimensions and key features.
9. Maintenance
9.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.
9.2 Battery Replacement
When the battery symbol appears on the display, it indicates that the battery is low and needs replacement. Follow the battery installation steps in Section 4.1 to replace the CR2450 button cell battery.
9.3 Storage
If storing the device for an extended period, remove the battery to prevent leakage and damage.
10. Troubleshooting
- No Display:
- Check if the battery is installed correctly with the correct polarity.
- Replace the battery with a new CR2450 battery.
- Inaccurate Readings:
- Ensure the device is not placed near heat sources, direct sunlight, or strong drafts.
- Perform a manual calibration if necessary (refer to Section 6).
- Allow the device to stabilize for at least 30 minutes after initial setup or relocation.
- Display is Faint:
- The battery may be low. Replace the CR2450 battery.
11. Warranty and Support
DOOMAY products are manufactured with quality and reliability in mind. For warranty information or technical support, please refer to the documentation included with your purchase or contact your retailer.
