Product Features: Advanced intelligent circuit design with line scanning capability Professional, sleek, and modern appearance Built-in practical lighting flashlight User-friendly sensitivity and volume adjustment functions Automatic power-off function for extended battery life Quality assurance for reliable performance Specifications: Line Scanning: Yes Line Testing: Yes Short Circuit Detection: Yes Line Voltage Checking: Yes Lighting Flashlight: Yes LED Display: Yes Headset Functionality: Yes Transmission Distance: ≥ 1km Output Signal Level: 15Vp-p Energy Conservation Design: Yes Adjustable Sensitivity: Yes Low-voltage Detection: Yes Power Supply: 3 AA Batteries & 1 9V Battery (not included) Package Size: 23.2 x 17.2 x 6.8 cm / 9.2 x 6.9 x 2.3 in Package Weight: 232g / 8.2 oz Package Includes: 1 i-POOK PK65H Multi-purpose Wire Tracker 1 PK23 Receiver 1 Alligator Clip Fit Line 1 English Manual