Hazet manufactures the 839-1 mains tester, a 2.8 mm, 58 mm current and voltage tester screwdriver designed for 220 - 250 V AC. It combines the functionality of an amp tester and a one-pole voltage tester. This tool is typically used for checking electrical connections in household wiring and appliances. https://elecena.pl/product/28930633/hazet-839-1-mains-tester-2-8mm-92mm-handle-220-250v-ac-with-clip 2025-06-10 https://elecena.pl/product/28930633/hazet-839-1-mains-tester-2-8mm-92mm-handle-220-250v-ac-with-clip 2026-07-11