Monostable mode is a configuration used in electronic circuits, particularly with 555 timers. In this mode, the circuit has one stable state and one unstable state. When triggered, it temporarily switches to the unstable state for a specific duration before returning to the stable state. This duration is determined by external components like resistors and capacitors. In practical applications, monostable mode is often used for generating single pulses or time delays. For example, it can be employed in automated systems to create a delay before an action occurs, such as turning on a light or activating a motor.