1. cw audio signal input 2. Display the received Morse code. 3. Decode the received Morse code audio into characters. 4. Display the receiving code rate 5. Adjust the time of receiving Morse code. External CW button, used to practice sending Morse code. Listen to the received Morse code in real time with a buzzer. The upgraded CW Morse code decoder, circuit board and component layout optimization, better installation. The function is upgraded, the operation is simpler and more convenient, the audio decoding is supported, the CW button is externally connected, the received Morse code audio can be directly decoded into characters, the decoding speed is adjustable, the buzzer simulates sounding, and the sound can be switched on and off freely, which makes it easier to learn Morse code. Kit name: HU-069B upgraded CW Morse code decoder Power supply: USB power supply 5V. Operating voltage: 5V Static working current: about 25mA (without decoding) Maximum working current: about 60mA (under the condition that the decoding buzzer rings). PCB size: 91x48mm Full set weight: 196g Note:DIY parts need to be welded and assembled by themselves, and customers need to bring their own welding tools. Note:Due to different production batches, the colors and shapes of accessories are random, and the designation is not accepted, which will not affect the use. Colour:As Shown Material:ABS Package Contents: 1 set * CW Morse Code Decoder 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.