The article reviews new, environmentally friendly refrigerants with low global warming potential (GWP). These refrigerants are safer for the environment but are flammable. The researchers explore different sensor technologies to ensure these refrigerants are used safely in refrigeration systems. They discuss the characteristics and risks of these new refrigerants and analyze various types of sensors suitable for monitoring them. The goal is to make sure the sensors used are accurate, sensitive, and durable in detecting potential leaks or issues with the low GWP refrigerants. The study suggests ways to improve sensors for better use of these eco-friendly refrigerants.