Features Data Protection: The Morse code keyer has segmented storage and data protection functions, bringing more convenience to storage. Different Modes: In addition, the command mode can more easily send the internally stored words, and the playback mode is also very convenient. Simple Control: Including power outage protection function, super power saving. Adjustable speed switch, control board potentiometer can be adjusted at any time. Easy to Operate: There are no complex button switches, and there are only two buttons and a phone switch on the key controller. Simple operation will greatly save your labor. Convenient Carrying: Light in weight and compact in size as well, the CW keyer is very convenient to carry with your for outdoor working. Specification: Item Type: Morse Code Keyer Model: MX-K2 CW Keyer Material: Aluminum Alloy Battery: 2 x AAA battery, shipped without battery.  How to Use:  1. J1: Buzzer mute.  2. L/R: di/da or da/di.  3. The F1 key can memorize 60 words and has a power off protection function.  4. The F2 key can remember 50 words and does not protecting data after power failure.  5. The R3 key is used for speed control. When the value of R3 decreases, the speed becomes faster.  6. Record: Hold down F1 or F2 for more than half a second, you will hear M, and now it will automatically record CW.  7. After completing, press F1 or f2 and you will hear S. 8. If you exceed the volume, you will be reminded with an F and it will exceed the standard.  9. T will not be recorded. 10. Information: Each information can not only store a long amount of memory, but can also be divided into several pieces.  11. Divide by entering EOM end of message at the end of each subdivision.  12. Play Segment: If you want to play the second segment, simply press the save button twice; If you want a third one, press 3 times, and so on.  13. Command Mode: Press F1 and F2 simultaneously, and you will hear C, indicating that you are in command mode. Package List: 1 x Morse Code Keyer Package List 1 x Morse Code Keyer