This demonstration presents the system shown in the paper accepted at CCNC 2009 [1]. By using this system, control of a network camera programmed to be activated by a sensor is possible. With mobile devices, a user can set or delete the service, which would be executed when a predefined event occurred. When a situation satisfies the predefined criteria of the program utilizing the sensor, this architecture detects it, and executes the service which is determined in advance. Precise definition of the event, which is composed of several types of sensors, is also possible. This architecture is not limited by vendor but can be adapted to many kinds of hardware. Therefore, a user can use sensors without being conscious of the difference of vendors. We demonstrate how to define an event and set the service for the defined event.