CT103 Electronic Continuity Tester – Wire Fault Finder with Red LED Indicator for DIY & Electronics Projects

Precise & Easy Wire Testing for Every Electronic Enthusiast

The CT103 Electronic Continuity Tester is a compact and efficient diagnostic tool designed to detect breaks, shorts, and discontinuities in wires, circuits, and electronic components. Featuring a bright Red LED Indicator, this handy tester gives instant visual feedback, making it perfect for DIY electronics projects, repairs, prototyping, and routine circuit diagnostics.

Built with simplicity in mind, the CT103 is ideal for students, hobbyists, electricians, and technicians who need a fast and reliable way to check electrical continuity. Whether you're repairing a faulty cable, building a custom circuit board, or diagnosing a dead connection — the CT103 is your go-to continuity companion.

Key Features & Benefits

Bright Red LED Indicator

• Instantly shows connection status — lights up when continuity is detected

• Easy to see even in low-light workspaces

Quick Fault Detection

• Detects open circuits, breaks, and poor connections in:

  • Wires

  • Fuses

  • Switches

  • Traces on PCBs

  • Electrical components

Perfect for DIY & Electronics Projects

• Ideal for:

  • Prototyping circuits

  • Fixing hobby electronics

  • Automotive wiring checks

  • Home appliance repair

  • School or college electronics labs

Low Power, Long Battery Life

• Operates on standard small batteries (e.g., AA/AAA or 9V depending on model)

• Efficient design ensures long testing sessions without frequent replacements

Lightweight, Durable & Portable

• Slim pen-style design for easy handling

• Tough outer casing for protection in workspaces and toolkits

Technical Specifications