Power probe 4 is also provided with 12-24VDC. This proves that with the improvised device, the power probe still maintains the 12-24VDC which proves that the volt is accepted by the consumers and is regarded as best in the market. Both are winners here. Cable length: After a thorough research on both the electronic circuits Power probe 3 and probe 4 one can indicate that power probe 4 is way better than power probe 3 in almost all the parameters like the cable length, display type, circuit breaker etc.

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This can sometimes lead to damages to electrical circuits on which technicians are working on and also becomes dangerous if not attended to. This is where a circuit breaker comes in handy. Display type is the screen which visualizes the diagnosis of the vehicle one is testing. The display type helps the technician to analyse various parameters and rectify them based on the readings captured.Power probe 4 is provided with a multi line color graphical LCD screen which is way better when compared to power probe 3 devices. Multi line LCD screens have various advantages like in one go most of the parameters are displayed which provides the health of the car engine and its related parts as well. Power probe 3 is placed around 12-24VDC which is normal for most of the electronic circuit testers which is considered as good. More is the volt better is the output is my take. Power probe 3 is provided with good volt. Power probe 4 is an improvised version of power probe 3 with 8 amp self resetting technique where the circuit breaker is set automatically if a huge current flow is detected. This is a very good concept introduced in power probe 4 tester as it would help the technician in detecting the current and also the tester would automatically set the amps when required.

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Voltage drop detection is one which detects the drop in the voltage current with the help of an electronic circuit tester which is connected to the vehicle. This is a good function as sometimes it becomes difficult to know if there is a voltage drop. The circuit breaker is the one which is used to interrupt the flow of current when there are faults detected in between the current flow. The fault could have arrived due to excessive current flow from an overload or via a short circuit. With the single line LCD screen the parameters are displayed one by one and hence provides an overall essence to the user about the health of the electronic circuits employed in the car.Power probe 3 is provided with a one year warranty which is good considering the frequent usage of the product in finding faults within the vehicle engine and other parts. Cable length of power probe 3 is around 20ft long which is decent enough to connect the vehicle with the electronic circuit. Also the device is provided with lights to brighten up the work area. The length of the cable provided by the power probe is good. Power probe 3 is provided with the voltage drop detection functionality as it is important to know if indeed there is a drop in voltage which has led to the vehicle engine failure or so.