Rackmount worldwide voltage and frequency output. Power input 105-125 VAC. Power output is selectable from 100V, 115V, 220V, 230V or 240V. Broad frequency range from 47 to 550hz 130/260 VAC 1000 VA. Includes sockets for testing international standard plugs. Designed to test electronic equipment for overseas customers. Also well suited for commercial and defense avionics applications with 400 HZ AC power.