EN54-16 and EN54-24 Certificated Voice Evacuation System Class D amplifier for voice alarm system, 120W to 500W per ... system includes power on, overheat, short circuit and overload.Features* Class-D power amplifier for voice evacuation system* 120W, 240W, 350W ... each channel ModelVA-P120/P240/P350/P500 AC PowerPower220V AC, ±10%, 50/60HzMax Working Current0.7A, 1.4A, 2A, 3A, 1 ...