DC Power Supply, Lab Bench Numerical Control Variable 4-Digital LCD Display Regulated Power Supply DC 6-55V to 0-50V 5A with Alligator Leads: Amazon.com: Industrial & Scientific
Test: Voltcraft Energy Logger 4000 | Tutonaut.de
Amazon.com: Brennenstuhl Adapter Primera-Line Energiem PM 231 E, 1506600 (PM 231 E) : Home & Kitchen
Voltcraft 4500ADVANCED DE Energiekosten-Messgerät integrierte Kindersicherung, Stromtarif einstellb: Amazon.de: Baumarkt
Uni-T UT60G Auto Ranging AC/DC Digital Multimeter with Computer RS232 PC Interface, with Temperature,Frequency and Capacitance Measurement, Sinometer - - Amazon.com