The technology has increasing to its advanced level every day. As per the advancements in technology, many gadgets and the important devices has been introduced in market. Among that, people would like to use the preventive gadgets, in order to save people’s life. Thus many people are using the fire alarm device which can be used at place where many people gather such as office, commercial buildings and more. This alarm device will be very useful to make a sound when the fire accidents occur. Though the fire alarm device is installed, it also needs the proper maintenance care without fail. Thus they have to hire to the fire alarm maintenance london at once in six months.