Building management systems are most regularly actualized in enormous ventures with broad mechanical, HVAC, and electrical frameworks. Frameworks connected to a BMS commonly speak to 40% of a structure's vitality utilization; if lighting is incorporated, this number ways to deal with 70%. BMS frameworks are a basic segment to overseeing vitality request. Inappropriately arranged BMS frameworks are accepted to represent 20% of building vitality utilization, or around 8% of all out vitality use in the United States. Notwithstanding controlling the structure's interior condition, BMS frameworks are some of the time connected to get to control or other security frameworks, for example, shut circuit TV (CCTV) and movement finders. Alarm frameworks and lifts are likewise some of the time connected to a BMS for observing. In the event that a fire is distinguished then just the alarm board could close dampers in the ventilation framework to stop smoke spreading, shut down air handlers, start smoke departure fans, and send all the lifts to the ground floor and park them to keep individuals from utilizing them.