UL Listed, 100% nitorgen (N2) gas as extinguishing agent, 30MPa storage pressure to minimize cylinder requirment, Pressure regulating type N2 storage cylinder valve, Extinguishing by reducing O2 concentration below 15%, Zero ODP, Zero GWP, N2 not toxic gas, No toxic byproduct in extinguishing, Clear view during after N2 discharge, Centralized cylinder bank for multiple zone protection.