LED digital tube clock chip IC for 12/24-hour clock: 2. Alarm function: Total of 3 alarm groups. 4. Voice control function: Button to select voice control switch. 5. Power-saving mode function, controlled by a total of 3 SET UP DOWN keys.
I. Function Description
1. 12/24-hour clock: In 12-hour format, PM is indicated by a light at the upper left corner
2. Alarm Clock Function: Includes 3 alarm sets, each rings for one minute upon the set time before pausing. The alarm frequency increases gradually. Press any key to stop the alarm during the ringing process.Temperature Display: Celsius to Fahrenheit toggle, default in Celsius, temperature range: -20°C to 50°C and -4°F to 122°F.
4. Voice Control Function: Press button to select voice control switch.
5. Energy-saving mode feature: High brightness from 8 AM to 6 PM, reduced brightness by 50% from 6 PM to 8 AM.
6. Features SET UP/DOWN three-button operation control.
7. Operating Voltage: DC 5.0V or 4 x 3A batteries, with an integrated 3.0V button cell battery.
8. The digital tube does not illuminate when powered by the built-in 3.0V battery for the IC, in the absence of a DC 5.0V or 6.0V battery supply.
II. Operation Instructions
1. Power-on self-check function: When powered by a DC 5.0V or 6V battery, the digital tube displays all segments for one second, then sequentially shows 0000, 1111, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999, followed by the decimal points on the digital tube. After a single beep from the buzzer, it enters the time mode, displaying 12:00, with a 15-second time and 3-second temperature display cycle. (This feature is available only when there is no 3V button cell battery.)
2. In Clock Mode:
A. Enter the setup mode by pressing SET, proceed as follows: 12/24-hour format - hour - minute - alarm 1 on/off - alarm 1 hour - alarm 1 minute - alarm 2 on/off - alarm 2 hour - alarm 2 minute - alarm 3 on/off - alarm 3 hour - alarm 3 minute - exit setup. Press DOWN and UP to make corresponding adjustments.
B. Press the UP button to toggle between Celsius and Fahrenheit
Press the DOWN button to toggle the voice control function. In the voice control enabled mode, the digital tube will light up for 13 seconds before turning off.
