Abstract: An automatic functioning light and warning system with remote signaling for use with mobility assistance devices, such as wheelchairs and walkers, having a housing, at least one detachable clamp connected to the housing, a battery-powered light incorporated into the housing, an internal audio alarm incorporated into the housing, an active or passive motion detection sensor and associated signal processing circuitry incorporated within the housing. The invention may use replaceable or rechargeable batteries as the power source. The remote receiver may be a stand alone device or interfaced into a monitoring system. A time delay circuit may be incorporated into the invention to automatically turn the light or alarm off at a predetermined time after activation and a sensor that prevents actuation of the light source when ambient light is above a predetermined threshold.