... 16 and EN54-24 Certificated Voice Evacuation System Class D amplifier for voice alarm system, 120W ... channel, two channel and four channels, each channel, s rated power have options of 120W, 240W, 350W ... power on, overheat, short circuit and overload.Features* Class-D power amplifier for voice evacuation system* 120W, ... , 5.6A, 8A, 12A DC PowerVoltage24V DC, ±20%Max Current 6.5A, 13A, 18A, 25A, 13A, 26A, ...