1. The product features an ble buzzer alarm (approximately 100 dB) and a visual indicator light. 2. Usage: After inserting the test leads, touch the two ends of the wire being tested. An ble and visual alarm indicates continuity; no alarm indicates an open circuit. 3. The device contains a built-in 9V battery. The battery compartment cover can be opened for battery replacement. When the red and black test leads are not connected to a circuit, no current flows and there is no power consumption. 4. When the test circuit is closed, the loop current is approximately 20 mA. This tester is not intended for use with sensitive electronic components or printed circuit boards. Part Name: 9V Continuity Tester Note: Suitable for testing cables, wires, PCB traces, and general continuity verification. Precautions: Do not use while the device or circuit under test is powered. Color: As shown Material: Plastic Package Contents: 1 x Continuity Tester 1 x Multimeter Test Lead 1 x Red and Black Alligator Clip Lead Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.