1. Introduction
Thank you for choosing the Deli WM01120 12-Digit Dual Power Basic Calculator. This manual provides essential information for the proper setup, operation, and maintenance of your calculator. Please read it thoroughly to ensure optimal performance and longevity of your device.
2. Product Overview
The Deli WM01120 is a versatile 12-digit basic calculator designed for both office and home use. It features a large LCD display, dual power options (solar and battery), and advanced functions like Grand Total (GT) and a 120-step check and correct feature.
Image 2.1: Front view of the Deli WM01120 calculator, showcasing its 12-digit display and key layout.
Image 2.2: Detailed view of the calculator, pointing out the high-quality LCD display, integrated chip for performance, rubber keyboard design, and dual power capability.
3. Setup
3.1 Power Source
The Deli WM01120 calculator operates on a dual power system: solar energy and battery power. This ensures reliable operation in various lighting conditions.
- Solar Power: The calculator utilizes solar energy for power when sufficient light is available.
- Battery Power: For low-light conditions or when solar power is insufficient, the calculator automatically switches to battery power. It requires two LR44 batteries (included).
Image 3.1: Illustration of the calculator's dual power options, highlighting the solar panel and battery compartment.
3.2 Battery Installation/Replacement
To install or replace batteries:
- Ensure the calculator is turned off.
- Locate the battery compartment on the back of the calculator.
- Open the battery cover.
- Insert two LR44 batteries, ensuring correct polarity (+/-).
- Close the battery cover securely.
4. Operating Instructions
4.1 Basic Operations
- ON/C·CE: Press to turn on the calculator or clear the current entry. Press twice to clear all entries and memory.
- AC: All Clear. Clears all entries and memory.
- Number Keys (0-9, .): Input numerical values.
- Arithmetic Operators (+, -, ×, ÷): Perform addition, subtraction, multiplication, and division.
- =: Displays the result of a calculation.
- %: Percentage key.
4.2 Grand Total (GT) Function
The GT (Grand Total) key accumulates the results of all previous calculations. After performing several calculations, pressing GT will display the sum of all those results.
Image 4.1: A hand pressing the GT key on the calculator, demonstrating its use for summing multiple calculation results.
4.3 120-Step Check and Correct Function
This function allows you to review and correct up to 120 previous calculation steps. This is useful for verifying long calculations and rectifying errors without re-entering the entire sequence.
- CHECK: Press to enter check mode and review previous entries. Repeated presses cycle through entries.
- CORRECT (00→0): While in check mode, use this key to correct an incorrect entry.
- AUTO REPLAY: Automatically replays the entire calculation sequence.
Image 4.2: The calculator display showing the 'CHECK' function in action, allowing users to review past entries.
4.4 Memory Functions
- M+: Adds the displayed value to the memory.
- M-: Subtracts the displayed value from the memory.
- MRC: Recalls the memory content. Pressing it twice clears the memory.
Image 4.3: Close-up of the calculator's memory function keys: MRC, M-, and M+.
4.5 Tax Functions
- SET: Used to set the tax rate.
- TAX+: Adds tax to the displayed value.
- TAX-: Subtracts tax from the displayed value.
Image 4.4: Close-up of the calculator's tax function keys: SET, TAX-, and TAX+.
4.6 Decimal Point and Rounding Selectors
On the top right side of the calculator, there are slide switches to control the decimal point and rounding settings:
- Decimal Point Selector (F, 5/4, 0, 2, 3, 4): Controls the number of decimal places displayed. 'F' is for floating decimal.
- Rounding Selector (Cut, Up, 5/4): Determines how results are rounded. 'Cut' truncates, 'Up' rounds up, '5/4' rounds to the nearest value.
Image 4.5: Close-up of the slide switches for decimal point control and rounding settings.
4.7 Auto Power Off
The calculator features an auto power-off function to conserve energy. If left idle for a certain period, it will automatically turn off. Press the ON/C·CE key to turn it back on.
Image 4.6: Side view of the calculator, illustrating its compact design and the automatic power-off feature for energy saving.
4.8 Operational Video
Video 4.1: This video demonstrates the basic operation and key features of the Deli WM01120 calculator, including inputting numbers and performing calculations.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the calculator's surface. Do not use liquid cleaners or abrasive materials.
- Storage: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: If the calculator will not be used for an extended period, remove the batteries to prevent leakage.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Insufficient light for solar power; low battery. | Move to a brighter area; replace batteries. |
| Incorrect calculation results. | Incorrect entry; incorrect decimal/rounding settings. | Use the Check and Correct function to review entries; verify decimal and rounding switch positions. |
| Keys are unresponsive. | Calculator frozen; physical obstruction. | Press AC to reset; check for debris under keys. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | deli |
| Model Number | WM01120 (also referred to as EM01120 in some specifications) |
| Colour | Black |
| Calculator Type | Standard Function |
| Power Source | Battery Powered (2 x LR44 included), Solar Power |
| Screen Size | 20 Centimetres (diagonal) |
| Display Type | LCD |
| Enclosure Material | Plastic |
| Item Dimensions (L x W) | 30L x 140W Millimeters (approx. 139.1 x 130.7 x 30mm) |
| Item Weight | 140 Grams |
| Number of Digits | 12 |
8. Warranty and Support
The Deli WM01120 calculator comes with a 3-year warranty from the date of purchase, covering manufacturing defects. For warranty claims or technical support, please contact your retailer or the manufacturer directly. Please retain your proof of purchase for warranty validation.
