Features :<br> 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.<br> 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.<br> 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 reference<br> 4. The sensitivity of the receiver can be adjusted either manually or automatically<br> 5. The receiver can sweep frequency automatically<br> 6. Both the transmitter and the receiver can work under mute mode<br> 7. Additional transmitters are available to extende or distinguish multiple signals.<br> 8. Compactness-durability and portability<br> 9. Auto power off within 10 minutes.<br> 10. Flashlight Function.<br> 11. Backlight Function.<br> 12. Mute Function.<br> Specification:<br> Voltage Measurement Range: Transmitter: 12V-400V (AC / DC)<br> Output Signal: Transmitter: 125KHz<br> Voltage: Transmitter: maximum 400V (AC / DC)<br> Cable Depth Measurement :Receiver 0-2.5 m (wall / underground cable)<br> Main Voltage Measurement : Receiver 0-0.4m<br> Work Environment:Transmitter:0~40; Receiver:0~40<br> Storage Temperature: Transimiter:-20~60c; Receiver:-20~60<br> Relative hamidity(no condensation):Transmitter Maximum:80%; Receiver Maximum:80%<br> Measuring Height: Transmitter Maximum:2000m; Receiver Maximum:2000m<br> Package List:<br> 1*Transmitter<br> 1*Receiver<br> 1*user Manual<br> 2*Alligator Clips (black, red)<br> 2*Test Leads (black, red)