Introduction
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your MASSII 11.5 Inch Extra Large Digital Clock. Please read this guide thoroughly before using the device to ensure optimal performance and longevity.
Product Overview
The MASSII 11.5 Inch Extra Large Digital Clock is designed for clear visibility and ease of use, particularly beneficial for seniors, individuals with dementia or Alzheimer's, and those with visual impairments. It features a high-definition display, talking time and date, multiple alarms, custom reminders, and automatic Daylight Saving Time (DST) adjustment.

Image: The MASSII 11.5 Inch Digital Clock with a clear black display showing the day, time, and date. The display reads "SUNDAY MORNING 11:36 A.M. AUGUST 25 2024" with sun and cloud icons.
Package Contents
Verify that all items are present in the package:
- 1x MASSII 11.5 Inch Digital Clock
- 1x Remote Control
- 1x Power Adapter
- 1x User Manual (this document)
Setup
- Placement: Choose a suitable location for the clock. It can be wall-mounted or placed on a tabletop. Ensure it is near a power outlet and in a position where the display is easily visible.
- Power Connection: Connect the provided power adapter to the DC IN port on the back of the clock. Plug the adapter into a standard electrical outlet. The clock will power on automatically.
- Initial Setup: Upon first power-on, the clock will display default settings. Use the included remote control to navigate the settings menu.
- Setting Time and Date:
- Press the 'Setup' button on the remote control to enter the settings menu.
- Use the arrow keys to navigate to 'Set Time' and 'Set Date'.
- Adjust the hours, minutes, month, day, and year using the arrow keys and confirm with the 'OK' button.
- Time Mode Selection: Navigate to 'Time Mode' to select between 12-hour (AM/PM) or 24-hour (Military) format.
- Daylight Saving Time (DST): The clock features automatic DST adjustment. Ensure 'Daylight Saving Time' is set to 'North America' or your relevant region for automatic updates in March and November.

Image: A visual representation of the clock's dimensions (11.5" x 6.5") and a user operating the clock with the remote control from a distance, highlighting its ease of use.
Operating the Clock
Display Modes and Brightness
The clock offers 6 customizable display modes, including white digits, multi-color digits, analog clock, or colored backgrounds. You can adjust the brightness for both day and night settings across 10 levels using the remote control. This feature ensures optimal visibility without being overly bright during nighttime hours.

Image: Three different display modes of the clock: one showing "WEDNESDAY NIGHT 10:15 P.M. OCTOBER 21 2022" with a moon icon, another showing "SATURDAY MORNING 10:15 A.M. JULY 21 2022" with a sun icon, and a third showing "SATURDAY NOON 12:25 P.M. JULY 21 2022" with a sun icon. This illustrates the different periods of the day and corresponding sun/moon icons.
Alarms and Reminders
The clock supports up to 19 alarms and 20 custom reminders. These can be set for daily, weekly, or specific date schedules. Preloaded reminders include "Wake up," "Medication Reminder," and "Drink Water."
- Setting Alarms:
- From the settings menu, navigate to 'Alarm Volume' and 'Alarm Duration' to set your preferences.
- Select a reminder slot (e.g., 'Wake up', 'Medication Reminder #1') and set the desired time.
- Toggle the reminder 'On' or 'Off'.
- Custom Reminders: You can add, edit, or upload up to 20 custom reminders. This feature allows for personalized messages to appear on the screen at scheduled times.

Image: An elderly woman is shown receiving a glass of water, with the digital clock in the foreground displaying a "Drink Some Water" reminder. A list of preloaded and custom alarm options (Wake up, Medication Reminder #1, #2, #3, Drink Water, Custom Alarms) is shown next to the image, emphasizing the clock's utility for daily reminders.
Talking Time and Date
The clock can audibly announce the time, day, week, and date in English. This feature is particularly helpful for users with visual impairments. The alarm volume can be adjusted to 10 levels.
Time Cycles
The clock displays 7 distinct time cycles: Morning, Noon, Afternoon, Evening, Night, Midnight, and Predawn. These cycles are accompanied by configurable Sun/Moon icons, providing a clear visual indication of the period of the day.

Image: A comparison chart detailing the features of the MASSII clock against generic alternatives. Key features highlighted for the MASSII clock include 11.5-inch HD display, 3 programmable themes, remote control, 5 font colors, automatic DST adjustment, custom reminders, colored icons, and 10 levels of auto-dimming. An image of the clock displaying "THURSDAY NIGHT 11:38 P.M. AUGUST 24 2023" with a moon icon is also shown, along with icons for different periods of the day (Morning, Noon, Evening, Night, Midnight, Predawn).
Maintenance
- Cleaning: Use a soft, dry cloth to clean the display and exterior of the clock. Avoid abrasive cleaners or solvents.
- Power Supply: Always use the original Safety-Certified adapter provided with the clock. Do not use third-party adapters.
- Memory Battery: The clock includes a durable memory battery that ensures time tracking and settings are saved during power outages. This battery is designed to last over 5 years and does not require replacement.
- Environment: Keep the clock in a dry environment, away from direct sunlight, extreme temperatures, and high humidity.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Clock does not power on. | Power adapter not connected or faulty outlet. | Ensure the power adapter is securely plugged into the clock and a working electrical outlet. Try a different outlet. |
| Display is too dim or too bright. | Brightness settings are incorrect. | Use the remote control to adjust the 'Brightness-day' and 'Brightness-night' settings in the menu. |
| Time or date is incorrect. | Manual setting error or DST not configured. | Enter the settings menu to manually set the time and date. Verify that 'Daylight Saving Time' is correctly set for your region. |
| Alarms or reminders are not sounding. | Alarm volume is too low or reminder is turned off. | Check 'Alarm Volume' in settings. Ensure the specific reminder is toggled 'On' and the time is correctly set. |
Specifications
- Brand: MASSII
- Model: CDC1105-BLACK
- Display Type: Digital & Analog
- Screen Size: 11.5 Inch
- Product Dimensions: 9.9"W x 6.5"H
- Material: Acrylonitrile Butadiene Styrene (ABS) with 1280*800 HD display
- Power Source: Plug-in Cord (Safety-Certified adapter included)
- Special Features: 10-level adjustable night dim, Auto DST adjustment, Custom 20 daily/weekly/specific date reminders, Talking Time and Date (English), Remote Control included, Memory battery (lasts over 5 years).
- Mounting Type: Wall Mount & Tabletop
- Item Weight: 1.41 pounds
Warranty and Support
MASSII offers a 365-Day Warranty and Replacement for quality issues. For any questions, concerns, or support needs, please contact MASSII customer service. We are committed to regularly updating features to suit your needs and provide reliable support.
For further assistance, please visit the official MASSII Store: MASSII Store on Amazon.