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    Automotive Electrical Tester with Voltage Display, 2-24V Digital Circuit Test Tool, Power Short Finder Probe with LCD Screen, Polarity Indicator, 5m Cable for Car DIY Diagnostic Repair

    • FIND ELECTRICAL FAULTS IN SECONDS Say goodbye to complicated multimeters! This circuit tester quickly pinpoints short circuits, bad grounds, and broken wires with clear LED lights and buzzer alarm, saving you hours of diagnostic time.
    • DIGITAL VOLTAGE READOUT & POLARITY CHECK Features a clear LCD screen to display exact voltage (2-24V) and Red/Green LEDs for instant positive/negative polarity identification. Ensure correct connections every time.
    • ACTIVATE COMPONENTS & TEST CONTINUITY Safely power up fuel pumps, lights, solenoids, and motors directly from the probe. The included auxiliary ground lead makes continuity testing a breeze.
    • BUILT-IN SAFEGUARDS FOR PEACE OF MIND Equipped with overload protection (8A) and an automatic circuit breaker to prevent damage to your vehicle's ECU or the tester itself, even if you accidentally short it.
    • EVERYTHING YOU NEED IN ONE KIT Includes a long 5-meter (16.4 ft) heavy-duty cable, strong alligator clips, a sharp probing tip, and an auxiliary ground lead. Ready to use right out of the box.
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    Overview
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    Any questions? Our AI mode will help you find out quickly.

    EM287 01
    EM287*3
    EM287 04
    EM287 06

    Automotive Test Device includes:

    *1pc x allsun Circuit Test Device

    *1pc x English User's Manual

    *1pc x Flexi Extension Cable

    *1pc x Crocodile Clip(one is Red, the other is Black)

    *1pc x Wire Test

    *1pc x Back-Test

    OPERATION INSTRUCTION

    EM287 220X220

    1.Testing the Unit and the Connections

    Press the front part(“-’’)of the rock switch,the test indicator should light RED.

    Press the rear part (“=’’),the test indicator should light GREEN.

    The unit is now ready for use.

    If the test indicator did not light,the cause may be that the clip connections are not good or the unit is damaged.

    555FF

    2. Using Illumination

    To turn on or off the illuminator,keep the clip of the auxiliary ground lead in contact with the TOUCH metal for about 0.5 second and then remove the clip from the TOUCH metal.

    FFFD3

    3.Measuring DC Voltage

    a.Set the selection switch to “VOLTAGE” position.

    b.Connect the probe to the more positive terminal of the circuit to be measured,and the clip of the auxiliary ground lead to the more negative terminal of the circuit.

    c.The voltage indicators will illuminate to indicate the voltage of the circuit.

    GGF66

    4.Polarity Test

    Note:Set the selection switch to “TEST”position.

    Contacting the probe’s tip to a positive(+) circuit will light the test indicator RED.Contacting the probe’s tip to a negative(-)circuit will light the test indicator GREEN.Contacting the probe’s tip to an open circuit does not turn on the test indicator.

    OPERATION INSTRUCTION

    225dddd

    5.Continuity Test

    Note:1.Set the selection switch to “TEST”position.

    2. Don’t press the rock switch,

    By using the probe tip together with the auxiliary ground lead, continuity can be tested on wires and components which are disconnected from the vehicle’s electrical system.

    When continuity is present, the test indicator will light GREEN.

    88ssss

    6.Activating Components out of the Vehicle’s Electrical System

    Note:Set the selection switch to”TEST”position.

    By using the probe tip together with the auxiliary ground lead,components can be

    activated,thereby testing their function.

    Connect the auxiliary ground lead’s clip to the negative terminal of the component to be tested.Contact the probe to the positive terminal of the component, the test indicator should light GREEN indicating continuity through the component.

    kkk999

    7. Testing Trailer Lamps and Connections

    1)Set the selection switch to “TEST”position.

    2)Connect the unit to a good battery.

    3)Clip the clip of the auxiliary ground lead to the trailer ground.

    4)Probe the contacts at the jack while pressing the rock switch’s front par((“-’’).This lets you check the operation and orientation of the trailer lamps.

    OPERATION INSTRUCTION

    225dddd

    8.Activating Electrical Components

    Note:Set the selection switch to”TEST”position.

    a.Activating components with the positive(+)voltage,Contact the probe tip to the positive terminal of the component,the test indicator should light GREEN.While keeping an eye on the green indicator,quickly press and release the rock switch’s front part(“-’’).If the green indicator changed instantly from GREEN to RED,you may proceed with further activation.If the green indicator went off at that instant,the uit has been overloaded.

    b.Activating electrical components with negative(-)voltage

    Contact the probe tip to the negative terminal of the component,the test indicator should light RED.

    254dddd

    9.Jumper Lead Feature

    Note:Set the selection switch to”TEST” position.

    The black battery clip and the auxiliary ground lead are connected directly through the unit.By leaving the red battery clip disconnected from the vehicle’s battery,the unit can be used as a long jumper lead.

    Be careful to avoid short circuit and overloading when using this jumper function.In this configuration, the leads are not protected by the unit’s built-in circuit breaker.

    256ggg

    10.Checking for Bad Ground Contacts

    Note:Set the selection switch to”TEST”position.

    Probe the suspected ground wire or contact with the probe tip.Observe the green test indicator.

    Press the rock switch’s front part(“-”)then release.

    If the test indicator changed from GREEN to RED,this is not a true ground.

    If the test indicator turned off when you pressed the rock switch’s front part(“-”)

    EM287 01
    EM287*3
    EM287 04
    EM287 06

    Automotive Test Device includes:

    *1pc x allsun Circuit Test Device

    *1pc x English User's Manual

    *1pc x Flexi Extension Cable

    *1pc x Crocodile Clip(one is Red, the other is Black)

    *1pc x Wire Test

    *1pc x Back-Test

    OPERATION INSTRUCTION

    EM287 220X220

    1.Testing the Unit and the Connections

    Press the front part(“-’’)of the rock switch,the test indicator should light RED.

    Press the rear part (“=’’),the test indicator should light GREEN.

    The unit is now ready for use.

    If the test indicator did not light,the cause may be that the clip connections are not good or the unit is damaged.

    555FF

    2. Using Illumination

    To turn on or off the illuminator,keep the clip of the auxiliary ground lead in contact with the TOUCH metal for about 0.5 second and then remove the clip from the TOUCH metal.

    FFFD3

    3.Measuring DC Voltage

    a.Set the selection switch to “VOLTAGE” position.

    b.Connect the probe to the more positive terminal of the circuit to be measured,and the clip of the auxiliary ground lead to the more negative terminal of the circuit.

    c.The voltage indicators will illuminate to indicate the voltage of the circuit.

    GGF66

    4.Polarity Test

    Note:Set the selection switch to “TEST”position.

    Contacting the probe’s tip to a positive(+) circuit will light the test indicator RED.Contacting the probe’s tip to a negative(-)circuit will light the test indicator GREEN.Contacting the probe’s tip to an open circuit does not turn on the test indicator.

    OPERATION INSTRUCTION

    225dddd

    5.Continuity Test

    Note:1.Set the selection switch to “TEST”position.

    2. Don’t press the rock switch,

    By using the probe tip together with the auxiliary ground lead, continuity can be tested on wires and components which are disconnected from the vehicle’s electrical system.

    When continuity is present, the test indicator will light GREEN.

    88ssss

    6.Activating Components out of the Vehicle’s Electrical System

    Note:Set the selection switch to”TEST”position.

    By using the probe tip together with the auxiliary ground lead,components can be

    activated,thereby testing their function.

    Connect the auxiliary ground lead’s clip to the negative terminal of the component to be tested.Contact the probe to the positive terminal of the component, the test indicator should light GREEN indicating continuity through the component.

    kkk999

    7. Testing Trailer Lamps and Connections

    1)Set the selection switch to “TEST”position.

    2)Connect the unit to a good battery.

    3)Clip the clip of the auxiliary ground lead to the trailer ground.

    4)Probe the contacts at the jack while pressing the rock switch’s front par((“-’’).This lets you check the operation and orientation of the trailer lamps.

    OPERATION INSTRUCTION

    225dddd

    8.Activating Electrical Components

    Note:Set the selection switch to”TEST”position.

    a.Activating components with the positive(+)voltage,Contact the probe tip to the positive terminal of the component,the test indicator should light GREEN.While keeping an eye on the green indicator,quickly press and release the rock switch’s front part(“-’’).If the green indicator changed instantly from GREEN to RED,you may proceed with further activation.If the green indicator went off at that instant,the uit has been overloaded.

    b.Activating electrical components with negative(-)voltage

    Contact the probe tip to the negative terminal of the component,the test indicator should light RED.

    254dddd

    9.Jumper Lead Feature

    Note:Set the selection switch to”TEST” position.

    The black battery clip and the auxiliary ground lead are connected directly through the unit.By leaving the red battery clip disconnected from the vehicle’s battery,the unit can be used as a long jumper lead.

    Be careful to avoid short circuit and overloading when using this jumper function.In this configuration, the leads are not protected by the unit’s built-in circuit breaker.

    256ggg

    10.Checking for Bad Ground Contacts

    Note:Set the selection switch to”TEST”position.

    Probe the suspected ground wire or contact with the probe tip.Observe the green test indicator.

    Press the rock switch’s front part(“-”)then release.

    If the test indicator changed from GREEN to RED,this is not a true ground.

    If the test indicator turned off when you pressed the rock switch’s front part(“-”)

    Product information

    Brand allsun
    Power Source Battery Powered,electric
    Style Automotive Electrical Circuit Tester
    Color Black
    Item dimensions L x W x H 10.79 x 2.09 x 1.65 inches
    Minimum Operating Voltage 2 volts_of_direct_current
    Upper Temperature Rating 125 °C
    Measurement Type Voltmeter
    Style Name Automotive Electrical Circuit Tester
    Item Dimensions 10.79 x 2.09 x 1.65 inches
    Specification Met Em287
    Brand Name allsun
    Model EM287
    UPC 788537552338
    Manufacturer Zhang Zhou Shi Xiang Cheng Qu Hai Mao Dian Zi Ke Ji co., LTD
    Part Number allsunEM287

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