OL-aSAT7 is a high-performance 7-inch touchscreen controller designed for powering and interfacing with acquisition modules manufactured by OmniLeak. The communication with these modules is based on a proprietary long-range failsafe bus. The controller is offered in IP54/NEMA 3S water-resistant wall-mounted enclosure, to be installed in technical rooms and other premises where dripping water might be potentially present. The primary use of OL-aSAT7 is to monitor one or two circuits with long detection strings for hydrocarbons, organic solvents or conductive liquids of up to 300 m each. The communication frontend permits robust and reliable operation even in case of partial failure of the circuit of acquisition modules. Each individual acquisition module is connected to an independent sensor and the system provides true multi-leak capability. All compatible acquisition modules are powered by the terminal through the proprietary bus and the need of additional infrastructure is considerably reduced. The maximum distance covered with this wired layout (accumulated sensor and jumper cables) is in excess of 1 km. The optional loopback wiring increases the system reliability in case of cable breaks and shorts.