Airbag connectors make a characteristic noise (audible feedback) when they are latched. However, this is not sufficient to ensure that electrical contact has also been made. For this, companies rely on synchronized mechanical, electrical, and optical testing. The connection is tested using a ZwickRoell AllroundLine testing machine. The AllroundLine series was developed for demanding testing situations, a key feature being its flexible expansion options. When connecting, a PCIe card installed in testControl II performs time-synchronous measurement of the current, while generating a graphic indicating the presence or absence of electrical contact. In parallel, the moment of latching is recorded optically for safety reasons. In addition, the essential components of the connector, such as springs and clamps, are filmed from two different angles. ZwickRoell's Multi-Capture function was developed for applications such as this and it delivers detailed, synchronized videos from two different angles. If necessary, as many as four video cameras can be connected. All incoming data is processed by the testControl II measurement and control technology. It provides quick, measured value acquisition for monitoring switch contacts and maximum modularity through a large number of free slots.