1.CAN Tester Box is a CAN Bus circuit tester compatible with 12 and 24 volt systems;2.Testing (OBD port) if any error before connecting connecting other diagnostic equipment to , such as pin short circuit and polarity reverse connection;3.Real-time display of communication signals ( such as communication protocol signals ) on the allocated pins which can quickly locate faults and replace the voltage measurement function of digital multi-meter;4.Fastly connect 16 pins during vehicle maintenance diagnosis;5.Monitoring input voltage of OBD when burning module, high and low voltage alarm;It can connect to other diagnostic tool, for example, multimeter, oscilloscope, diagnostic scanner, etc. Let you take it easy to check the problem of the car;Quickly confirm which pin has problem.CAN Tester Box is a CAN Bus circuit tester compatible with 12 and 24 volt systems;Testing (OBD port) if any error before connecting connecting other diagnostic equipment to , such as pin short circuit and polarity reverse connection;Real-time display of communication signals ( such as communication protocol signals ) on the allocated pins which can quickly locate faults and replace the voltage measurement function of digital multi-meter ;Fastly connect 16 pins during vehicle maintenance diagnosis;Monitoring input voltage of OBD when burning module, high and low voltage alarm.Specifications:Input Voltage : 9.0-32.0VDCMaximum Load : 2.0AResolution : 0.1VOverload Protection : Yes, PTC Fuse (Self-Healing)Reverse Polarity Protection : Yes,LED On Pin 4&5 Turn RedProtocol Standard : PWM(J1850),VPW(J1850), 9141-2,DIS/ 14230-4,CAN(J-2284)Operating Temperature : 0-50,Humidity less than 70%Banana Socket : 16P x 2.0 mmOBD Cable Length : 70 cm ( 27.5inch )Color:As ShownMaterial: ABSPackage Contents:1 x Diagnosis ScannerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.