Items with details. 1.Dual dc regulated power supply:- Product name : " power supply, digital (variable) 30-0-30 volts " Product code : " el-193" Description : Variable dual output Dual Display DC Power Supply Digital 30-0- 30V @2A Technical Specification : Output Voltage : 30-0- 30V @ 2A Output Current :0-2A Input Voltage: 110V, 60Hz. (Or 220V, 50Hz.) Constant voltage/ Constant Current Voltage and Current adjustment Power effect: CV