MX-K2 CW Keyer Automatic Key Controller Morse Code Auto Memory Key Controller for Radio Amplifier With storage and segmented memory function, commonly uses statements for storage._x000D_ Only two buttons and a switch for easy operation._x000D_ Includes power-off protection function, super power saving._x000D_ Adjustable speed switch, the potentiometer of the control board can be adjusted anytime._x000D_ Power Supply: 2 x AAA Batteries (NOT Included)_x000D_ _x000D_ How to use:_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 fuction._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 par_x000D_ t will noe be recorded._x000D_ Message : Every message can not only be storaged by a long memory, it also can be separate into several_x000D_ parts by inputing EOM (End of Message)at the end of every segmentation._x000D_ Play the segmentations: 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, et cetera ._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_ Colour: black_x000D_ Material: metal_x000D_ _x000D_ Package Contents:_x000D_ 1 * Morse Code Auto Memory Key Controller_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light shooting 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_