- Reliable stretching and division of pulses - Reliable frequency-to-current conversion - Adjustable switch-on and switch-off delay In machines and installations, monitoring and evaluation of pulse sequences is often necessary. For evaluation in a control system, the generated signals must be preprocessed. The ifm range includes pulse dividers, pulse stretchers, frequency-to-current converters and units for switch-on and switch-off delay of signals. All units can be mounted on a rail.