Functions:Detecting cables, electrical lines-water/gas supply pipelines buried in wall or earthDetecting interruptions and short circuit in cables and electrical lines buried in wall or earthFeatures :1. The transmitter is integrated with the function of AC/DC voltmeter, which can measure 12 to 400V AC/DC voltage on a linear basis.2. The screen of the transmitter can display preset transmitting power, transmitted codes-its own battery energy-mains voltage detected-AC/DC status of mains voltage detected-and warning symbol for mains voltage.3. The Transmitter has the function of self-inspection to detect its own working status and to display it on the LCD screen for user's reference4. The sensitivity of the receiver can be adjusted either manually or automatically5. The receiver can sweep frequency automatically6. Both the transmitter and the receiver can work under mute mode7. Additional transmitters are available to extende or distinguish multiple signals.8. Compactness-durability and portability9. Auto power off within 10 minutes.10. Flashlight Function.11. Backlight Function.12. Mute Function.Specification:Voltage Measurement Range: Transmitter: 12V-400V (AC / DC)Output Signal: Transmitter: 125KHzVoltage: Transmitter: maximum 400V (AC / DC)Cable Depth Measurement :Receiver 0-2.5 m (wall / underground cable)Main Voltage Measurement : Receiver 0-0.4mWork Environment:Transmitter:0~40; Receiver:0~40Storage Temperature: Transimiter:-20~60c; Receiver:-20~60Relative hamidity(no condensation):Transmitter Maximum:80%; Receiver Maximum:80%Measuring Height: Transmitter Maximum:2000m; Receiver Maximum:2000mPackage List:1*Transmitter1*Receiver1*user Manual2*Alligator Clips (black, red)2*Test Leads (black, red)