On/Off Power Switch(Lighted),20A fuse & power cord. Enclosed, non-isolated, adjustable transformer, with Output Volt Meter. Built-in copper coil, material quality, more secure and durable. Contact voltage regulator, wide voltage range (0-130V). Suit for Motor Speed control,Label Printing Machine,EE Labs,Test for Railroad Switching, Power Supplies, Satellite,Equipment,Telecommunication Equipment.