Description
Overview
TOPDON CT100 is a handheld tester for automotive DC electrical circuits. It measures voltage, identifies polarity and applies a specified test load to help locate weak connections and voltage drops. A long test lead and interchangeable probe connections support access to different test points.
Features
- DC voltage measurement from 3.3 to 65 V
- Professional DC 5–30 V load test at up to 1.2 A
- Automatic positive/negative polarity indication
- 0.1 V display resolution
- Audible and visual status alerts
- 12.5 ft / 3.8 m test cable
- Interchangeable 4 mm probe connections
Testing Functions
- DC voltage measurement
- Positive and negative polarity indication
- Load testing within the specified 5–30 V range
- Connector-voltage, fuse and wiring checks
Supported Systems
12 V, 24 V and 36 V automotive electrical systems within the stated measurement range. The load-test range is narrower than the voltage-measurement range.
Technical Specifications
| Voltage range | DC 3.3–65 V |
|---|---|
| Load test | DC 5–30 V, up to 1.2 A |
| Accuracy | ±0.1 V at 3.3–60 V; ±0.2 V at 60–65 V |
| Resolution | 0.1 V |
| Cable length | 3.8 m |
| Working temperature | −10 °C to 50 °C |
Package Contents
- TOPDON CT100 tester
- 2 mm probe
- Alligator clip
- Adapter
- Carrying bag
- Quick user guide
Compatibility and safety notice: Use only on supported DC automotive circuits and follow the official safety instructions. Do not use on AC circuits, loaded computer circuits or airbag circuits.
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