For sale, Abbott Electronics voltage/frequency inverters. Model SN180D-115A-400. These small inverters use input of 25-30 VDC and produce 115 VAC at 400 HZ, 1.57 amps, single-phase, sine wave. Dimensions 6 X 6 X 2.5 inches. New old stock, $35 each, flat-rate Priority Mail shipping $9.85 where applicable by USPS. Steve Hilsz jydsk at tds.net