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 the time of receiving Morse code Can connect external CW button for practicing Morse code (CW button not included) With buzzer, listen to the received Morse code in real time Kit name:CW Morse code decoder DIY kit Power supply:USB 5V power supply Working voltage:5V Static working current:about 25mA (without decoding) Maximum working current:about 60mA (when the decoding buzzer sounds) Note:This is a DIY kit and you need to assemble it yourself Colour:Blue and Green and parent Material:PCBandelectronic componentsandacrylic Package Contents: 1 x CW Morse code decoder DIY kit(Shipping in disassembled, requires assembly before use.) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.