Few studies of sensor-based falls detection devices have monitored older people in long-term care settings. The present investigation has addressed this gap by trialing the feasibility and acceptability of a non-contact smart sensor system (NCSSS) to monitor behaviour and detect falls in an Australian residential aged care facility (RAC). Methods This investigation was undertaken using a mixed methods approach, comprising three phases: (1)Pilot study design and implementation at a RAC, using a purposive sampling approach;(2)Study evaluation and post-pilot interviews; and(3)Analysis and review of results.Results Data was collected for four RAC participants over four weeks of the NCSSS pilot study. Numerous feasibility challenges were encountered, for example, in the installation configuration, placement of sensors for optimal detection, network and connectivity issues, and maintenance requirements. Conclusion The area of smart sensor technologies in falls monitoring and detection remains a relatively emergent field of investigation, and presently there are few real-life studies of NCSSS in an Australian RAC setting reported in the literature. This study confirmed that NCSSS technology may have a role in falls and behaviour monitoring of elderly residents in RAC and home environments. However, feasibility factors may affect implementation and adherence.