Product Features: Efficient cable and pipeline detector: Identify power cables, electrical lines, and water/gas supply pipelines buried in walls or underground. Interruptions and short circuit detection: Pinpoint interruptions and short circuits in concealed cables and electrical lines. Key Features: Built-in AC/DC Voltmeter: Measures voltage from 12 to 400V (AC/DC) on a linear basis. Informative Display: View preset transmitting power, transmitted codes, battery status, detected mains voltage, AC/DC status, and safety warnings. Self-Inspection Function: Regularly checks its own operational status and displays it on the LCD screen for user convenience. Adjustable Sensitivity: Receiver sensitivity can be set manually or automatically. Frequency Sweeping: Receiver can automatically sweep frequencies. Silent Operation: Both transmitter and receiver are capable of working in mute mode. Expandable System: Additional transmitters available for handling multiple signals. Portable Design: Compact, durable, and easy to carry. Energy-saving Auto Shut-off: Power off automatically after 10 minutes of inactivity. Flashlight and Backlight: Equipped with flashlight for dark environments and backlight for better readability. Mute Function: Option for silent operation to avoid disturbances. Specifications: Voltage Measurement Range: 12V-400V (AC/DC) Output Signal Frequency: 125KHz Cable Depth Measurement: Up to 2.5 meters (wall/underground) Main Voltage Measurement: Up to 0.4 meters Operating Environment: 0~40℃ Storage Temperature: -20℃~60℃ Relative Humidity: Max 80% (non-condensing) Maximum Measuring Height: 2000 meters Package Includes: 1 x Transmitter 1 x Receiver 1 x User Manual 2 x Alligator Clips (black, red) 2 x Test Leads (black, red)