Introduction

The EXTECH Profi-Durchgangsprüfer CT-20 (CT20) is a professional continuity tester designed for electricians and technicians who need quick, trustworthy circuit verification on the job.

Key Features & Design

• Product type: Continuity tester (Durchgangsprüfer)
• Model: CT-20 (CT20)
• Brand: EXTECH
• Intended use: Professional electrical testing
• Design approach: Simple, practical tool for on‑the‑job use

Performance / Benefits

• Helps you quickly verify continuity in electrical circuits
• Supports safer, more efficient diagnostics during troubleshooting
• Offers a reliable, professional-grade solution for field and workshop work