The CJ4-R Diagnostic System by Injectronic USA is a professional level OBD-II scan tool with a built-in two-channel lab scope. The CJ4-R was developed with the professional technician in mind. The unit offers enhanced OBD-II capabilities such as bidirectional controls, enhanced DTCs, fast live data and much more. Diagnostic coverage includes domestic, Asian and European vehicles. The CJ4-R offers the technician freedom by connecting to external displays, such as a smartphone or tablet, via Bluetooth connection for easy mobility. The built-in two-channel lab scope allows easy access for fast waveform diagnostics. The unit includes a free Android and Apple OS app that turns the CJ4-R lab scope into a fast, wireless voltmeter using any compatible mobile device. Add-ons have been developed to future proof the tool, such as a Battery/Charging System Tester, and Fuel Injector Tester.