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. Only two buttons and a switch for easy operation. Includes power-off protection function. super power saving. Adjustable speed switch. the potentiometer of the control board can be adjusted anytime. Power Supply: 2 x AAA Batteries (NOT Included) How to use: J1:buzzer mute L/R:di/da or da/di F1 key can 60 words .and it has power-off protection fuction. F2 key can 50 words . it doesn't protect the data when the power fails. R3 key is for speed control. speed fast when the value of R3 down. Record: Keep pressing on F1 /F2 for more then half second. you will hear 'M'. now it records CW automatically. When it is all done. press F1/ f2. you will hear "S". It will remind you by "F" if you exceed the volume. and the extra par t will be recorded. Message : Every message can not only be storaged by a long memory. it also can be separate into several parts by inputing EOM (End of Message)at of every segmentation. Play the segmentations: If you play the second segmentation. just press the memory key 2 ; if you the third one. then press the key 3times. et cetera . mode:press F1 AND F2 at the same time. you will hear "C".now it is under the mode of End mode: press F1 and F2 at same time again. or you can input "D" by pressing the auto key Colour: black Material: metal Package Contents: 1 * Morse Code Auto Memory Key Controller 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.