HT Instruments Installation Testers Electrical tester 622957 - HT Instruments 1009610, HT Instruments manufactures the COMBI G3 electrical tester, model 1009610, which adheres to VDE standard 0413/0100. This device is designed for comprehensive VDE testing, ensuring electrical installations meet safety standards. It is suitable for applications in both industrial and residential settings, providing accurate and reliable results. HT Instruments 1009610 COMBI G3 Electrical Tester VDE Standard Ergonomic Design