These are Genuine OpenBuilds BlackBox controller which we have imported from Openbuilds so that Indian Maker community can access this awesome little controller within faster time frames, avoiding customs, import hassles and economical price range as compared to getting a single controller for individual use.
Incorrect wiring of Endstops can damage your controller. Please refer to this link for correct endstop wiring or contact us if you have a different type of endstop. Alternatively, you can include pre-wired endstops from the options with your order.