Powerful and Mulit-function, One Tester Multipurpose KM10 Professional Power Circuit Probe, support 10 functions: Voltage & Polarity Testing, Continuity Testing, Signal Circuit Testing , Activating Components in hand as well as in the vehicle. And Testing Trailer Lights and Connections, Activating Components W/Ground, Red/Green Polarity LED, Following & Locating Short Circuits, Checking for Bad Ground Contacts

Two Different Power Source, Worry-FreePowered via the vehicle by connected to battery cigarette lighter or battery electrode.

Built-in Red/Green Polarity LEDEasy to Determine the Positive, Negative and Open Circuit

LCD Screen Display, Easy to Read Indicated Test Results A Large color LCD screen, can display all the test result, save your time on diagnose car electrical problems.

Head Lights & Audio Tone, Make It Possible to Work in the DarkBuilt-in front LED flashlight , allow to work in the dark environment. Audio tone indicator allows for no-look menu scrolling once users are familiar with menu tone assignment.

Circuit Breaker Protection Technology Ability to Power Up Components. Automatically shut-off if current exceeds 5 Amperes, it design to protect an electrical circuit from damage caused by over current, typically resulting from an overload or short circuit.

Specifications Display:TFT color display (160x128 dpi ) Operating Temperature: 0 to 60? ( 32 to 140?) Storage Temperature: -40 to 70? (-40 to 185? ) External Power: 12.0 or 24.0 V power provided via vehicle batteryDimensions (L*W*H): 178*47*28mm (7*1.85*1.10in ) Net Weight: 0.1Kg (0.22LB)

Warm Note: This probe is very sharp on the pointed end, easily to get hurt. Better to be more careful when performing.