1. OpenShort Circuit FinderTrcing WirePowered by a 2pcs 9V battery, V210 driving and short finder circuit tester can easily locate circuit breaker points, open connections, disconnections, wire damage, current leakage with tone changes, even trace wires/cables, without even damaging the insulation. This is a convenient, efficient circuit tool for DIYER, electricians and technicians that can easily and quickly judge the continuity of cables/wires and diagnose the continuity of circuit breakers. 2. Locating Breaker Point EfficientlyV210 circuit breaker finder tool comes with transmitter and receiver LEDs showing open or short circuit conditions. The Builtin buzzer sound of the signal receiver helps you immediately and easily locate open connections, broken wires, current leaks, and even trace wires. Note: Signal strength affects volume. If the sound is low, try adjusting the probe position to find a stronger signal for accurate detection. 3. Checking Short CircuitV210 Automotive Short Circuit Finder allows you to find intermittent circuit problems by flexing wires or connectors and listening for a change in the receiver tone without damaging the insulating layer. Receiver with adjustable sensitivity via knob and flexible 7'Probe. Note: The sound signal may be affected by propagation,resistance, shielding, and circuit complexity. To improve accuracy, check wiring stepbystep and complete signals to pinpoint the exact short. 4. Easy To UseThe short circuit finder is equipped with an adjustable 7inch soft probe, providing flexibility to reach difficult areas. The probes of the receiver are made of curly steel and can be bent as needed to access wires in crowded or challenging spaces. Depending on the characteristics and sensitivity settings of the circuit, the probe will detect signals from the wires at various locations.