Helmet HALO Hit Right Football Training Sensor With the hits getting harder every game, safety is crucial at all levels. The HITRight Training Sensor is an in-helmet training aid that provides feedback on blocking and tackling form, teaching and reinforcing HEADS UP tackling. The sensor provides an audible alert to tell players when their head has lowered into an unsafe position that could risk injury. It's like a personal coach in a player's helmet, providing constant reinforcement. This easy-to-install training aid gives real-time feedback to keep players safe and at the top of their game.