This 5-90V digital LED circuit tester is designed for automotive electrical diagnostics, offering precise voltage measurement and bidirectional testing capabilities. Key features include: 1. **Voltage Display**: Clear digital readout shows exact voltage from 5 to 90 volts, ensuring accurate readings for car, RV, and vehicle systems. 2. **Bidirectional Testing**: Allows testing in both directions to quickly identify circuit issues without needing to reverse connections. 3. **Extended Spring Wire & Probe**: Comes with a flexible spring wire and durable probe for easy access to hard-to-reach areas in vehicles. 4. **LED Indicators**: Bright LEDs provide visual confirmation of circuit status, making it simple to detect live wires or faults. 5. **Versatile Use**: Suitable for various automotive applications including cars, RVs, trucks, and other vehicles with electrical systems up to 90V. 6. **Durable Construction**: Built with robust materials to withstand regular use in automotive environments. 7. **Easy Operation**: User-friendly design requires no special skills; simply connect the probes to test circuits safely. 8. **Portable Design**: Compact size makes it convenient to carry in a toolbox or glove compartment for on-the-go diagnostics. 9. **Safety Features**: Designed with safety in mind to prevent short circuits and protect users during testing. 10. **Wide Compatibility**: Works with most standard automotive electrical systems, providing reliable performance across different vehicle types.