Amazon.com: LVYUAN Voltage Transformer Converter 500 Watt Step Up/Down Convert from 110-120 Volt to 220-240 Volt and from 220-240 Volt to 110-120 Volt with US Outlet, Universal Outlet, Circuit Breaker : Tools & Home Improvement
Control Transformer, 150Va, 208/240/480Vac: Electronic Transformers: Amazon.com: Industrial & Scientific
Amazon.com: SIMRAN Step Down Transformer THG-500 - Transformer - AC 220/230 V - 500 Watt : Electronics
Amazon.com: Patioer 1000W Voltage Converter Transformer(230V to 110V, 110V to 230V), Step Up/Down Converter 110/120 Volt - 220V/230V/240V Volt (1000W) : Electronics
Amazon.com: Nova 2641021-0200, Transformer, 200vA, 120/230/480/190V : Electronics