RENNtech | Pre-Safe Module and Data LoggerRENNtech PSM Pre Safe Module and Data Logger RENNtech PRE SAFE Module and DATA Logger (RENNtech PSM Logger) The Hand Held PRE SAFE Module is designed for unrestricted track driving and data logging for improved vehicle performance on track. RENNtechs PRE SAFE Module can be used to override the Forward Collision Warning and the Pre Safe Autonomous Braking system found in select Mercedes Benz AMG models. Engineered for driving without interference from