Item Type: Morse Code Keyer_x000D_ Product Material: Aluminium Alloy_x000D_ Product Model: MX-K2_x000D_ How to Use:_x000D_ Battery: 2 x AAA Battery ( not included)_x000D_ J1: Buzzer mute. _x000D_ L/R: di/da or da/di_x000D_ F1 key can remember 60 words, and it has power-off protection function._x000D_ F2 key can remember 50 words, it doesn't protect the data when the power fails._x000D_ R3 key is for speed control, speed getting fast when the value of R3 getting down._x000D_ Record: Keep pressing on F1 /F2 for more then half second, you will hear 'M', now it records CW automatically._x000D_ When it is all done, press F1/ f2, you will hear "S"._x000D_ It will remind you by "F" if you exceed the volume, and the extra part will not be recorded._x000D_ Message : Every message can not only be stored by a long memory, it also can be separate into several_x000D_ parts by inputting EOM (End of Message)at the end of every segmentation._x000D_ Play the Segmentation: If you want play the second segmentation, just press the memory key 2 times; if you want the third one,_x000D_ then press the key 3times, etc ._x000D_ Command Mode: Press F1 AND F2 at the same time, you will hear "C", now it is under the mode of command. _x000D_ End Command Mode: Press F1 and F2 at same time again, or you can input "D" by pressing the auto key._x000D_ When you use the auto key, PIC will make a judgement: you will hear "R" for the right command, and "?" for invalid command._x000D_ "A": Turn off the memory of long-short voice._x000D_ "B": Turn on the memory of long-short voice. This is the most common command._x000D_ "C" and "E": Repeat play. it will stop automatically after playing 255 times under the 'E' command mode._x000D_ 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._x000D_ "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._x000D_ Press it again, after keyer making the judgement of "R", it will be over._x000D_ "D" ends the command mode, and goes back to common mode._x000D_ "T" transfer command, it lasts for 30 seconds,then goes back to command mode.