KZYEE KM50 Power Circuit Probe Kit, Automotive Circuit Tester with AC DC Current Resistance Circuit Tester Fuel Injector Testing (Digital Voltage Tester/Multimeter/Short Finder/Battery Tester)
The KZYEE KM50 Power Scan kit is the most revolutionary circuit tester to date, which works off of 12-24 Volt sources, featuring DC Voltage, AC Voltage, Frequency, Duty Cycle, Fuel Injection Circuit Detection, Resistance, and Diode Especially, in AC Voltage, Frequency, Duty Cycle, and Fuel Inject Modes, users can long-press the mode button to switch between Waveform Display Mode and Digital Display Mode. The power scan is indeed the ultimate in power and affordability, allowing users to check circuitry in one single step. An absolute must for every technician who is looking for a fast and accurate solution to electrical systems diagnostic.

KZYEE KM50 Electrical System Diagnostics

The tool is the best electrical tester for reducing diagnostic time in all 8 DC- to 30 DC Voltage vehicle electrical systems. After a simple hook-up of the tool to the vehicle's battery, you can:
1.determine at a glance if a circuit is positive, negative, or open without having to reconnect clips from one battery pole to another.
2.test for continuity with its built-in auxiliary ground lead.
3.by depressing the power switch, conduct a positive or negative battery current to the probe tip for testing the function of anelectrical component without the use of jumper wires.
4.test for poor ground contacts instantly without performing voltage drop tests. The tool is also short-circuit protected; its internal circuit breaker will trip if it becomes overloaded.
5.follow and locate short circuits without wasting fuses. The tool's long cable allows you to test along the entire length of the vehicle without constantly searching for suitable vehicle grounds. 

Features:

1.Performs every type of service including power injection, measurement, ground testing, polarity checks, continuity testing and components activation
2.Easy to read AVOmeter allows you to read voltage, current and resistance at the fingertip
3.With a flip of the power switch, you have an instant hot/ground lead for powering up electrical components like cooling fans, relays, etc.
4.Simultaneously uses the hot lead and the ground lead to activate components right in your hand
5.Instantly identifies positive, negative and open circuits
6.Tests for bad ground contacts instantly, allowing you to follow and locate shorts fast without wasting fuses
7.Instantly checks continuity of switches, relays and diodes
8.Circuit breaker protected
9.Built-in Flashlight enables you to work in the dark
10.Audio tone indicator allows for no-look menu scrolling once users are familiar with menu tone assignment
11.Long cable 6M/20ft (extendable) provides excellent accessibility to test along the vehicle
12. Powered by vehicle battery directly instead of applying extra battery inside the device. 
13. Able to be used in dark places such as engine compartments by the equipped light-emitting diode.