In the weeks since 15-month-old Benjamin Seitz perished after being left in a hot car for several hours, his mother has launched an awareness campaign.

An attorney with the Boehringer Ingelheim pharmaceutical company in Ridgefield, Lindsey Rogers-Seitz has not yet returned to work since the July 7 death of her son. But she has been putting her legal training to work, spending hours studying documents from car manufacturers about creating warning alerts when children are left in a car, similar to those that chime when seat belts aren’t used. She’s also written letters to politicians and newspapers. Her hope is to warn other parents of “this grave danger” of children left in cars during warm weather, with 600 such deaths reported nationally since 1998.