Fire Alarms The types of system we provide include Analogue Addressable, Conventional, Radio Systems & Air Sampling Systems using manufacturers such as Advanced, Apollo, KAC, EMS & Airsense. All of the systems we provide are open protocol, which means the end client is not tied down to any one company when it comes to maintenance. Although we are confident in our own capabilities, should any client not be fully satisfied with our service this allows them to change to another specialist at any time.