BOAK Car Battery Tester,1-75V DC Bidirectional Test Light with Voltage Display&Led Light,Golf Cart Battery Meter,1-20KHz Signal Frequency Checker,Automotive Continuity Tester with Voltmeter.

• 【Car Battery Capacity Tester】:Easily Check the Capacity of Your Car Battery with the LED Signal Light Display, Indicating 25%, 50%, 75%, and 100% Battery Capacity.
• 【Bidirectional Voltage&Continuity Testing】:The BOAK Car Battery Tester Features a Bidirectional Voltage Test Light, Allowing You to Check Polarity and Continuity with the Included Alligator Clamps. The Circuit Board Also Includes LED Indicators, with Red Light Indicating Positive Polarity and Green Light Indicating Negative Polarity.
• 【1-20KHz Automotive Signal Frequency Check】: With the Ability to Measure Frequencies Ranging from 1Hz to 20KHz, This Tester Is Perfect for Checking Various Vehicle Sensors and Signals Such as Wheel Speed Sensors, Fuel Injector Control Signals, Cam and Crank Outputs, and Engine Reference Signals.
• 【LCD Display&Illumination&Alarm Buzzer】:The Heavy-Duty Test Light Is Equipped with a Highly Clear LCD Digital Backlight Display Screen, Providing Precise Readings with a Resolution of 0.1V. The Built-In Illumination Under the Handle Allows for Easy Testing in Dark Environments. Additionally, an Alarm Buzzer Alerts You During Testing.
• 【100% Customer Satisfaction& Computer Safe】:Our Professional Auto Circuit Tester Is Designed with a Built-In Circuit Board Chip for Enhanced Safety and Durability. It Prevents the Car's Computer Board from Burning Out. We Strive for 100% Customer Satisfaction and Continually Upgrade Our Product's Quality.

To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.

• Question : What is the resolution of the LCD display screen?
  Answer : The LCD display screen provides precise readings with a resolution of 0.1V.
• Question : What is the range of frequencies this tester can measure?
  Answer : This tester can measure frequencies ranging from 1Hz to 20KHz.
• Question : Is this product safe for use with a car's computer board?
  Answer : Yes, this professional auto circuit tester is designed with a built-in circuit board chip for enhanced safety and durability. It prevents the car's computer board from burning out.