Feature: 1. AUTOMATIC TIME ADJUSTMENT: The AM 002 digital clock DIY kit features automatic time adjustment, accurately aligning with standard time without manual settings for accurate time display. 2. MULTIFUNCTIONAL DESIGN: Integrated with hourly chime, alarm, temperature display, and temperature alert functions, this DIY clock kit is practical for real time temperature monitoring and alerts in extreme conditions. 3. EASY ADJUSTMENTS: Convenient operation with simple adjustments using the MODE, PLUS, and RST buttons on the back for setting and adjusting various functions of the electronic clock DIY kit. 4. BRIGHTNESS CONTROL: Adjustable brightness allows flexibility to set display brightness according to surrounding light conditions, ensuring comfort for eyes in dark or bright environments. 5. DUAL POWER SUPPLY: Powered by direct connection to Mini USB interface or 1 x CR1220 3V button cell battery (not included), offering long lasting stability and energy saving operation. Specification: Item Type: Digital Clock DIY Kit Material: PCB, Acrylic Input Voltage: DC 5V Input Interface: Mini USB Supported Functions: Hourly Chime, Alarm Function, Automatic Time Setting, Temperature Display, Temperature Alarm, Brightness Adjustment Adjustment Method: Press MODE, PLUS, and RST buttons on the back lightly Battery Type: 1 x CR1220 3V Button Battery (not included) . Package List: 1 x Development Board 1 x Instruction Manual 1 x Data Cable 1 x Screw Set 8 x Outer Shell Board