A device is disclosed for plugging into a standard wall outlet that is protected by a Ground Fault Circuit Interrupter (GFCI) and for facilitating detection of a GFCI trip using a door/window sensor of a security system. The device comprises: a plug, the plug configured to plug into an outlet, wherein the outlet is protected by the GFCI; and an electromagnet. The electromagnet is powered by the outlet when the plug is plugged into the outlet. The electromagnet is automatically powered off when the GFCI trips. The electromagnet is configured to be located proximate the window/door sensor of the security system for detecting when the electromagnet is powered off. The window/door sensor is configured to signal an absence of an electromagnetic field near the window/door sensor.