CW speed adjustable from 1 to 999 WPM. Programming and interfacing via USB port (" Line Interface") PS2 keyboard interface for CW keyboard operation, no computer required PTT output with configurable lead, tail and hang times. 3 memories with macros Serial number. CW keyboard (via a terminal server program such as Putty or for serial program) Speed potentiometer (speed can also be adjusted by ) Type: DIY Kits QRSS and HSCW Beacon/ Mode iambic A and B Direct key mode Ultimate Mode Error mode Reversing the lever Hellschreiber mode (keyboard send, memory macro, beacon) Farnsworth Timekeeping Adjustable frequency sidetone Sidetone disabled Use the lever to change the mode of settings, program memory, etc. Keying compensation Dah to Dit ratio adjustment Weighted Call sign reception practice send practice Memory stacking Logging and contest programming interface Klewinkki via 1.0 and 2.0 interface protocol emulation Auto space Word space adjustment Preconfigured and custom ProSign Non-volatile storage of most settings Modular code design, allowing selection of features and easy code modification Material: Metal + Plastic colour: blue Package Contents: 2 x Open CW keyer MK2 KIT 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.