The K111 is a dual output isolated trip amplifier/converter for specific on/off sensors (Max frequency: 20 kHz), it is also an input repeater and frequency divider. It's useful as a stand alone speed monitoring system of rotative wheels.
The K112 isolation module has been designed to adapt specific on/off sensors to a standard NPN and/or PNP connection. It's a useful solution to interface a proximity sensor with a PLC. The two outputs (PNP and NPN) can be utilized simultaneously.