Why Choose Our OBD2 Splitter? Tired of fighting over your car's single OBD port? This 1-to-2 splitter solves the problem—use 2 OBD devices at once (like a scanner + GPS tracker) and charge your phone via 18W fast USB! Plus, the one-press power switch lets you cut power safely (no more unplugging devices mid-use!). Dual OBD Ports: Turns 1 car OBD port into 2—connect diagnostic scanners, code readers, trackers, or other OBD accessories simultaneously. Safety Power Switch: Press the yellow button to cut power to the splitter—protects devices and avoids draining your car battery. Perfect for: Protecting OBD devices from sudden power surges Preventing battery drain when devices are idle Avoiding damage to ports/cables from frequent plugging/unplugging Easy to Use Plug the male OBD connector into your car's OBD port (usually under the dashboard). Connect 2 OBD devices to the 2 female OBD ports (or use 1 port + charge via USB). Press the switch to power on/off—simple & safe! How to Use： Plug the male OBD connector into your car's dash port. Hook up 2 OBD devices (or 1 + charge via USB). Press the switch to power on/off instantly—done! What's Included 1 x OBD2 1-to-2 Splitter (with 1-press switch & 18W USB port)