The product family of systems for relative pressure testing offers cost-effective devices for automated pneumatic leak testing in manufacturing environments with low to medium requirements. Leakages from 0.05 mbar l / s can be identified by evaluating the pressure curve of components subjected to overpressure or underpressure. The devices are suitable for tests in the pressure range from -1 to +16 bar with typical component volumes of 0.2 to 2 l. Higher pressure can be realized on request. With the autoTune and differential evaluation function in the INTEGRA version, the device independently determines the optimal process parameters based on a sample. For this purpose, the user has to enter characteristic values known from the drawing. With the autoTune function, machine runtimes that are too long due to runtime specifications set too long or pseudo rejects due to runtimes set too short can be reliably avoided by inexperienced users. With the LTS compact device variant, predetermined test sequences can be configured by setting the limit values. The INTEGRA version offers the possibility to create extensive test programs including the device control by means of a graphic color display. Up to three test or control programs with different test methods can run asynchronously during operation. Serial and digital interfaces and modules for all bus systems as well as for Ethernet and Firewire are available to transfer measurement data. The INTEGRA devices can also be operated and operated remotely.