Features Easy Operation There are no complex button switches and only two buttons and a phone switch on the button control. Thanks to the easy operation, you save a lot of work. Various Modes In addition, in command mode, the internally stored words can be sent more easily, and the playback mode is also very convenient. Easy control: including power failure protection function, super energy saving. Adjustable speed switch, potentiometer of the control board can be adjusted at any time. Data Protection: The Morse code keyer has segmented storage and data protection features that make storage more convenient. Comfortable to carry: Thanks to its light weight and compact size, the CW key is very convenient to carry when working outdoors. Specification: Item Type: Morse Code Button Model: MX-K2 CW Keyer. Material: aluminium alloy. Battery: 2 x AAA battery, battery not included. Use: 1. J1: Mute buzzer 2. L/R: di/da or da/di 3. The F1 button can store 60 words and has a power off protection function. 4. The F2 button can remember 50 words and does not protect the data after a power failure. 5. The R3 button is for speed control. When the value of R3 decreases, the speed becomes higher. 6. Recording: press and hold F1 or F2 for more than half a second, you will hear M and now CW will automatically record. 7. When finished, 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 is not recorded. 10. Information: each information can not only store a lot of memory, but also be divided into several parts. Package list: 1 x Morse code keyer Package List 1 x Morse Code Keyer