ELECTRIC CIRCUIT TESTER JTC-1248

1. Key Features
The JTC-1248 electric circuit tester is designed for fast and safe testing within a 6–24V DC range. It features an internal 8A safety protection that automatically cuts off power when voltage exceeds the limit. The 4.5m test wire allows flexible operation around vehicles. The tool can test both positive and negative voltage, check continuity of switches, relays, diodes, fuses, and wiring harnesses. It also supports polarity testing and quickly identifies short circuits and bad grounds.

2. Technical Specifications
Product code JTC-1248
Product name Electric circuit tester
Voltage range 6–24V DC
Wire length 4.5m
Safety protection Built in 8A safety fuse
Test functions Positive negative voltage, continuity, polarity
Applicable tests Switches, relays, diodes, fuses, wiring

3. Applications
JTC-1248 is widely used for automotive electrical diagnostics, including cars, trucks, motorcycles, and DC electrical systems. Ideal for professional workshops, auto electricians, and maintenance technicians. Helps quickly locate fuse faults, short circuits, and grounding issues.

4. How to Use
Connect the ground clip to the vehicle ground or negative terminal. Use the probe tip to touch the test point to check voltage, polarity, or continuity. The tester will automatically cut off if voltage exceeds the safe limit. Observe the indicator to determine circuit condition.