Specification: Origin: Mainland China Type: Module Condition: New Product model: AM-002 Input voltage: DC5V Function description: hourly alarm, alarm function, automatic time synchronization, temperature display, temperature alarm, brightness adjustment Usage: Mini USB can be used by plugging it into a phone charger, power bank, computer USB interface, etc Adjustment method: Gently press the MODE key (mode key), PLUS key (addition key), and RST key (reset key) on the opposite side Product features: Multiple power input methods, can be connected to a computer USB port, mobile phone charger, and power bank. Size: 87 * 87 * 20MM/3.43x3.43x0.79inch Note: When sleeping at night, you don't need to report the time on the hour to turn off this function. When the ambient temperature is below the set low temperature or above the set high temperature, an alarm will be issued to remind you to turn on or off the air conditioning and keep the clock temperature at home. When the alarm clock is turned on, it will sound when the set time is reached. Pressing any button will stop the sound. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x DIY Rotating Digital LED Display Module 1. Hourly Chime: With the hourly chime feature, the DIY rotating digital LED display module will sound a beep and the LED display will change every hour from 8 AM to 10 PM. This provides convenient timekeeping and helps you stay aware of the passing hours. 2. Alarm Function: Set the alarm time, and the alarm electronic digital clock kit will ring when the set time is reached. You can easily stop the alarm by pressing any key. The duration of the alarm can be customized to suit your preferences. 3. Temperature Alert: Activate the temperature alert function, and when the ambient temperature falls below or exceeds the set range, the temperature display will continuously blink, accompanied by a sounding buzzer. This feature of electronic digital display clock module helps you monitor and respond to temperature changes in your environment. 4. Disable Hourly Chime: If you prefer not to have the hourly chime, you can easily disable this feature. This allows you to personalize the clock's functionality according to your preferences. 5. Temperature Warning: When the ambient temperature falls below the set low temperature or exceeds the set high temperature, an alert will remind you to enable or disable the temperature alert function. This helps you maintain a comfortable and suitable temperature in your home.