MAIN POWER SUPPLY VOLTAGE AC 100-240V, 50/60Hz BACKUP POWER SUPPLY VOLTAGE AC 100-240V, 50/60Hz MAIN POWER SUPPLY FUSE T2AL 250V RATED POWER 40W LINE INPUT INPUT SIGNAL 1V(0dBV) INPUT IMPEDANCE 10 KΩ FREQUENCY RESPONSE 80Hz-18KHz SNR >90dB, A weighted POWER AMPLIFIER CONTROL INTERFACE CHANNEL NO. 2 (CH1 and spare amplifier) OUTPUT SIGNAL 1.4V THD <0.1% CONTROL SIGNAL Self-testing, amplifier fault and power saving control signal LOUDSPEAKER CIRCUIT OUTPUT CHANNEL NO. 24 MAXIMUM LOUDSPEAKER LOAD 500W CONTACT INTERFACE CONTACT INPUT 24 contact inputs (not monitored) OPERATING CONDITIONS HUMIDITY < 95%, without condensing OPERATING TEMPERATURE -10°C~+55°C(14°F to +131°F) STORAGE TEMPERATURE -40°C~+70°C(-40°F to +158°F)