Anti-explosion amplifier waterproof amplifier water-proof amplifier amplifier Technical ParameterAnti-explosion grade Exd IICT6 Defend gradeIP67Input level(receiving , ... working voltage187-270VAC,50HZ ,single phasecosumed power(Zero signal)2.5Wcosumed power (max signal )45WAmplifier powerRated 30 W, Peak valueAir pressure80~106KpaAmbient ...