- Enclosed, non-isolated, Adjustable transformer, with Output Volt Meter. - On/Off Power Switch(Lighted), 20A fuse & power cord. - Built-in copper coil, material quality, more secure and durable. - Over-voltage protection, the use of more security,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.