DIY assembly kit requires welding and soldering tools. CW Morse code decoder circuit board with components. Supports audio decoding. Includes external CW button to decode received Morse code audio into characters. Features adjustable decoding speed and buzzer. Simulated sound with toggle switch. Power Supply: USB 5V Working Voltage: 5V Static Working Current: Approximately 25mA (without decoding) Maximum Working Current: Approximately 60mA (with decoding buzzer) Functions: 1. CW audio signal input 2. Display received Morse code 3. Decode received Morse code audio into characters 4. Display receiving code rate 5. Adjust receiving Morse code timing 6. External CW button for Morse code practice 7. Buzzer for listening to received Morse code Colour: As shown Material: Plastic Package Contents: 1 x DIY Welding Practice Kit (parts require assembly) Note: Image colors may vary slightly due to lighting and display settings. Measurement tolerance is +/- 1-3cm.