OBD2 scanners read fault codes out of the car's computer, and there are more of them here than anything else, mostly Ancel or OBDeleven; some connect to a phone over Bluetooth, others have their own display and need no app. The second group is battery testers, which measure 6–30 V and the state of charge; the BST600 prints the result as well. For narrower jobs there is also a Wi-Fi inspection camera and a 4-in-1 digital oscilloscope.
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OBD2 scanners read fault codes out of the car's computer, and there are more of them here than anything else, mostly Ancel or OBDeleven; some connect to a phone over Bluetooth, others have their own display and need no app. The second group is battery testers, which measure 6–30 V and the state of charge; the BST600 prints the result as well. For narrower jobs there is also a Wi-Fi inspection camera and a 4-in-1 digital oscilloscope.