Introduction
Thank you for choosing the Zacro LCD Digital Aquarium Thermometer. This device is designed to provide accurate and reliable water temperature readings for your aquarium, fish tank, or terrarium. Please read this manual thoroughly before use to ensure proper operation and longevity of your product.
Safety Information
- Ensure the thermometer unit (LCD display) itself is not submerged in water. Only the probe is designed for submersion.
- Keep batteries out of reach of children. If swallowed, seek immediate medical attention.
- Do not expose the thermometer to extreme temperatures outside its operating range (-10°C to +50°C).
- Handle the probe and cable with care to prevent damage.
- Always turn off the device before performing any maintenance or battery replacement.
Package Contents
- 1 x Zacro Digital Aquarium Thermometer
- 1 x LR44 Button Cell Battery (pre-installed or included separately)
- 1 x Suction Cup for probe attachment
- 1 x User Manual (this document)
Product Features
- Accurate Temperature Measurement: Provides readings to within 0.1 degree Celsius/Fahrenheit.
- Wide Temperature Range: Measures from -50°C to +70°C (-58°F to +158°F).
- Clear LCD Display: Large, easy-to-read digital display for quick temperature checks.
- Submersible Probe: Designed for direct immersion in water for precise readings.
- °C/°F Switchable: Easily switch between Celsius and Fahrenheit units.
- Compact Design: Discrete size for minimal visual impact on your setup.
- Suction Cup: For secure placement of the probe within the tank.
- Energy Efficient: Long-lasting battery life.
Specifications
| Model Number | ZDT1-AUX-1 |
| Temperature Range | -50°C to +70°C (-58°F to +158°F) |
| Operating Temperature | -10°C to +50°C (14°F to 122°F) |
| Accuracy | ±1°C (±2°F) |
| Display Type | LCD |
| Power Source | 1 x LR44 Button Cell Battery |
| Product Dimensions | 3.6 x 3.2 x 0.6 inches (9.1 x 8.1 x 1.5 cm) |
| Probe Cable Length | Approximately 25 inches (63 cm) |
| Material | Plastic |
Setup and Installation
- Insert Battery: Open the battery compartment on the back of the thermometer unit. Insert one LR44 button cell battery, ensuring correct polarity (+/-). Close the compartment securely.
Note: The battery may already be pre-installed. Remove any protective tab if present.
- Position the Display Unit: Place the main LCD display unit outside your aquarium or terrarium. It can be attached to the glass using a suction cup (not included for the main unit, typically placed on the rim or stand) or simply rested on a flat surface.
Image: The Zacro LCD Digital Aquarium Thermometer showing the main unit, probe, and suction cup. - Install the Probe: Attach the small suction cup to the temperature probe. Submerge the probe into the water of your aquarium or terrarium. Ensure the probe is fully immersed but the main display unit remains outside the water. Position the probe in an area where water circulation is good for accurate readings.
Image: Visual guide showing the installation of the thermometer: placing the monitor outside the tank and submerging the probe inside. 
Image: A close-up of the high accuracy probe submerged in an aquarium, illustrating its function. - Power On: Press the "PWR" button on the front of the thermometer to turn it on. The current temperature will be displayed on the LCD screen.
Installation Video Guide
Video: A short demonstration showing how to install the Zacro Digital Water Thermometer in an aquarium, including placing the display unit and submerging the probe.
Operation
- Power On/Off: Press the "PWR" button once to turn the thermometer on. To turn it off, press and hold the "PWR" button for approximately 3 seconds.
- Switch Temperature Units: Press the "°C/°F" button (located below the display) to toggle between Celsius and Fahrenheit temperature readings.
Image: Close-up of the thermometer displaying temperature in Celsius and Fahrenheit, highlighting the switch button. - Reading Temperature: The large LCD display will continuously show the current water temperature.
Maintenance
- Cleaning: Wipe the display unit with a soft, dry cloth. The probe can be gently cleaned with a soft brush or cloth if algae or debris accumulates. Do not use abrasive cleaners or solvents.
- Battery Replacement: When the display becomes dim or stops working, it's time to replace the LR44 button cell battery. Open the battery compartment, remove the old battery, and insert a new one with the correct polarity.
- Storage: If not in use for an extended period, remove the battery to prevent leakage and store the thermometer in a cool, dry place.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display or dim display | Dead or low battery; incorrect battery installation. | Replace the LR44 battery, ensuring correct polarity. |
| Inaccurate temperature reading | Probe not fully submerged; probe placed in an area with poor water circulation; damaged probe. | Ensure probe is fully submerged and in a well-circulated area. Check for visible damage to the probe or cable. Compare with another reliable thermometer. |
| Display shows "HHH" or "LLL" | Temperature is outside the measurable range (-50°C to +70°C). | Move the probe to an environment within the specified temperature range. |
Warranty and Support
Zacro products are designed for reliability and performance. For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official Zacro website. Keep your purchase receipt as proof of purchase.
