Toby’s Car Tester ELM-327 serves as a compact wireless diagnostic tool featuring Bluetooth connectivity for seamless pairing with Android phones, Windows PCs, or other devices. It reads and clears engine trouble codes, resets the check engine light, and displays real-time data like RPM, coolant temperature, fuel trim, vehicle speed, and sensor readings. Compatible with all OBD-II vehicles from 1996 onward, this scanner supports full OBD2 protocols for efficient car diagnostics and maintenance.