The real-time location systems (RTLS) take recently important part in many location-aware systems especially in indoor objects localization tasks. In the health-care environment, bed tracking, patient monitoring or critical equipment tracking are important applications of such systems. The paper deals with currently developed RTLS based on the Infra-Red (IR) light. We develop the system primarily for University Hospital of Ostrava however the general structure of the system a hardware components can be used in other systems. In the article we introduce one part of the localization system - the Anchor. This paper also presents an energy assessment and testing of the power consumption of anchor performance. The result section brings major conclusions and possible directions for future work.