Feature:1. Large storage capacity makes it possible to store many words, which will surely meet all the storage needs.2. The Morse code keyer has segmented storage and data protection, bringing more convenience to the storage.3. Also, the command mode makes it easier to send the words stored inside, and the repeat play mode is also very convenient.4. There is only two buttons and pone switch on the keyer, and the simple operation will largely save your labour.5. The power-off function will not only perfectly protect the data inside, but also saves the battery for long use.Specification:Item Type: Morse Code KeyerProduct Material: Aluminium AlloyProduct Model: MX-K2How to Use:Battery: 2 x AAA Battery ( not included)J1: Buzzer mute. L or R: di or da or da or diF1 key can remember 60 words, and it has power-off protection function.F2 key can remember 50 words, it doesn't protect the data when the power fails.R3 key is for speed control, speed getting fast when the value of R3 getting down.Record: Keep pressing on F1 or F2 for more then half second, you will hear 'M', now it records CW automatically.When it is all done, press F1 or f2, you will hear "S".It will remind you by "F" if you exceed the volume, and the extra part will not be recorded.Message : Every message can not only be stored by a long memory, it also can be separate into severalparts by inputting EOM (End of Message)at the end of every segmentation.Play the Segmentation: If you want play the second segmentation, just press the memory key 2 times if you want the third one,then press the key 3times, etc .Command Mode: Press F1 AND F2 at the same time, you will hear "C", now it is under the mode of command. End Command Mode: Press F1 and F2 at same time again, or you can input "D" by pressing the auto key.When you use the auto key, PIC will make a judgement: you will hear "R" for the right command, and " " for invalid command."A": Turn off the memory of long-short voice."B": Turn on the memory of long-short voice. This is the most common command."C" and "E": Repeat play. it will stop automatically after playing 255 times under the 'E' command mode.You just press the short voice auto key if you want to turn it off. Press it again, after keyer making the judgement of "R", it will be over."C" can't stop automatically, but it can be used as a sign. You just press the short voice auto key if you want to turn it off.Press it again, after keyer making the judgement of "R", it will be over."D" ends the command mode, and goes back to common mode."T" transfer command, it lasts for 30 seconds,then goes back to command mode..Package List:1 x Morse Code Keyer1 x User Manual