How can I process low voltage signals? digitalSTROM Support September 25, 2018 07:02 Updated Follow The SW-UMR200 has 2 potential-free inputs (7.5-230V DC / AC) and 2 potential-free relay outputs (changeover contacts) to integrate devices such as alarm systems, door locks, door bells, pumps etc. Related articles How can motion detectors be integrated? How to trigger an Alarm? Does digitalSTROM offer a driver with 10V input?