1. Introduction
Welcome to your new CATIGA CD-8185 Desktop Calculator. This manual provides essential information for setup, operation, and maintenance to ensure optimal performance and longevity of your device. Designed for ease of use, this calculator is suitable for home, office, school, and business environments.

Image: The CATIGA CD-8185 Desktop Calculator in black, showcasing its large display and button layout.
2. Key Features
The CATIGA CD-8185 Desktop Calculator is equipped with features designed for efficiency and user comfort:
- Easy-to-Use Design: Features a large, tilted LCD display for clear visibility and reduced eye strain.
- Large Responsive Buttons: Spacious buttons minimize input errors and provide tactile feedback.
- Robust Build: Constructed with a durable plastic body for everyday use.
- Versatile Functions: Supports basic arithmetic operations including addition, subtraction, multiplication, division, percentage calculations, and clear entry (CE).
- Dual Power Sources: Operates on both solar power and a pre-installed battery, ensuring continuous functionality in various lighting conditions. The calculator automatically shuts off after approximately 6 minutes of inactivity to conserve power.

Image: A side view of the CATIGA CD-8185 calculator highlighting its ergonomic angled display and compact dimensions.

Image: The underside of the CATIGA CD-8185 calculator showing anti-slip rubber pads and the large, responsive number keypad.
3. Setup
Your CATIGA CD-8185 calculator is designed for immediate use with minimal setup.
Powering On
The calculator utilizes dual power sources: solar and battery. It comes with a CR2 battery pre-installed.
- Solar Power: Place the calculator in a well-lit area. The solar panel will automatically power the device.
- Battery Power: In low-light conditions, the pre-installed CR2 battery will provide power.
To turn on the calculator, press the ON/C button. The display should show '0'.

Image: The CATIGA CD-8185 calculator with visual indicators for its dual power sources: pre-installed battery and solar power.
4. Operating Instructions
Familiarize yourself with the calculator's functions for efficient use.
Basic Arithmetic Operations
- Addition (+): Enter the first number, press +, enter the second number, then press =.
- Subtraction (-): Enter the first number, press -, enter the second number, then press =.
- Multiplication (x): Enter the first number, press x, enter the second number, then press =.
- Division (÷): Enter the first number, press ÷, enter the second number, then press =.
Special Functions
- Percentage (%): To calculate a percentage, enter the number, press x, enter the percentage value, then press %. For example, to find 10% of 200, enter 200, press x, enter 10, then press %.
- Square Root (√): Enter the number, then press √.
- Change Sign (+/-): To change the sign of a displayed number, press the +/- button.
Clearing Entries
- Clear Entry (CE): Clears the last entered number or operation without affecting previous calculations.
- On/Clear (ON/C): Turns the calculator on or clears all current calculations and memory.
5. Maintenance
Proper care will extend the life and functionality of your calculator.
- Cleaning: Use a soft, dry cloth to clean the calculator's surface. Avoid using liquid cleaners, abrasive pads, or chemical solvents, as these can damage the display or casing.
- Storage: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Replacement: The calculator uses one CR2 battery. If the display becomes dim or unresponsive in low light, the battery may need replacement. To replace, carefully open the battery compartment on the back of the unit, insert a new CR2 battery with the correct polarity, and close the compartment.
6. Troubleshooting
If you encounter any issues with your calculator, refer to the following common solutions:
- Display is blank or dim:
- Ensure the calculator is in a well-lit area for solar power.
- Press the ON/C button to turn it on.
- If the issue persists, the battery may need replacement.
- Calculator turns off automatically:
- This is a normal power-saving feature. The calculator will automatically shut off after approximately 6 minutes of inactivity. Press ON/C to reactivate.
- Incorrect calculation results:
- Ensure all previous calculations are cleared by pressing ON/C before starting a new calculation.
- Verify that the correct operation buttons were pressed.
7. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 6 x 4.25 x 0.75 inches |
| Item Weight | 4.6 ounces |
| Model Number | CD-8185 |
| Batteries | 1 CR2 batteries required (included) |
| Power Source | Solar Powered |
| Screen Size | 4 Inches |
| Brand | CATIGA |
| Manufacturer | Jeoly / Catiga Electronic Co. Ltd |

Image: The CATIGA CD-8185 calculator with its length, width, and thickness dimensions indicated.
8. Warranty and Support
CATIGA is committed to providing quality products and customer satisfaction.
- Customer Support: Enjoy 24/7 customer support for any inquiries or assistance.
- Lifetime Phone Support: Dedicated phone support is available from 9am to 5pm PST.
- Return Guarantee: A 30-day unconditional return guarantee is provided for your peace of mind.
For further assistance, please contact the manufacturer, Jeoly / Catiga Electronic Co. Ltd, or the seller, Sunlite Industrial Corp.
9. Product Videos
Color Up Your Workspace
Video: This video showcases the CATIGA CD-8185 calculator in various colors, highlighting its design and suitability for different workspaces.



