The DIN VDE 0834 nurse call system standard defines requirements for the safe and reliable operation of call systems in hospitals, nursing homes and similar facilities. It covers much more than the call button, including reliable transmission, system monitoring, fault reporting, electrical safety and regular inspection. This article explains what these nurse call system standards mean in practice, how the requirements are addressed within wired and wireless nurse call system configurations, and how independent certification forms part of Caretronic’s ongoing conformity assessment.