An ABC designation on a fire extinguisher means it will extinguish different types of fires. The "A" classification means the chemicals contained within the fire extinguisher are suitable for paper based substances; the "B" classification means it's suitable for flammable liquids, and the "C" classification means it's suitable for electrical equipment.
Significantly more effective than alternative extinguishing agents
Effective on Class A,B,C,F and E below 5KV
Ease of installation — just hang the devices on the top of protection.