The HT Instruments HT9021 Clamp Meter is a digital multimeter with a 6000-count display, suitable for CAT III 1000 V and CAT IV 600 V measurements. Manufactured by HT Instruments, this versatile device functions as a voltage tester, ammeter, and frequency tester. It is ideal for electricians and technicians needing a reliable tool for various electrical testing applications. https://elecena.pl/product/28786051/ht-instruments-1009021-ht9021-clamp-meter-digital-6000-counts-cat-iii-iv 2025-05-22 https://elecena.pl/product/28786051/ht-instruments-1009021-ht9021-clamp-meter-digital-6000-counts-cat-iii-iv 2026-07-10