A request to view statistic data of a system is received. The substrate comprises a transparent electrode formed on the insulating substrate, and a black matrix formed on the transparent electrode and performing the function also of protrusions. The blocking triggering unit is triggered either upon implantation or explantation of the electrical therapy device. The olefin product containing ethylene and propylene can then be used to make polyethylene and polypropylene, respectively. This enables improved performance of a processing unit that obtains and processes the sensor signal for monitoring the operation of the CIP system.