Abstract: A container breach detector system, which has a self-contained container breach detector having a housing with a mounting plate. At least one retaining clip retains a collapsible detector device. The self-contained container breach detector is mounted onto a door frame of a transportation container to monitor breaches of the transportation container, whereby the collapsible detector device is in a collapsed configuration when the door is closed, and in a neutral configuration when the door is opened. The self-contained container breach detector further has an electrical system having at least one set of sensors having at least one IR proximity and distance sensor that detects a proximity or distance change of the door internal face when the collapsible detector device changes from the collapsed configuration to the neutral configuration indicating that the door is open.