The keyboard repeat-delay setting, from 0 (approximately 250 millisecond delay) through 3 (approximately 1 second delay).
Remarks
This property indicates the amount of time that elapses after a key is pressed and held down until keystroke repeat messages are sent by the operating system. This value is in the range from 0 (approximately 250 millisecond delay) through 3 (approximately 1 second delay). The actual delay associated with each value may vary depending on the hardware.
The keyboard_speed property indicates the repeat speed setting that determines the length of time between each keystroke repeat message sent by the operating system.