Abstract: An on-vehicle carbon monoxide detector is provided where the detector has an on-board diagnostic, 16-pin connector which interfaces the carbon monoxide detector with a vehicle's computer system. This interface allows the detector to be installed on any vehicle with a 16-pin connector and provide functionality when the carbon monoxide content of air exceeds a predetermined level. With an interface with a vehicle's computer system, the present disclosure may warn an occupant with many different signals, or combination of signals. Examples include visual signals and audible signals. Further, the present disclosure provides a system for altering the performance of the vehicle if an occupant is unresponsive.

Abstract: An underwater signaling device which has an independent source of pressurized gas can operate regardless of the status of a scuba diver's air source. The underwater signaling device produces a sound signal which may be heard beyond 100 feet, and the present disclosure may operate to depths of up to 250 feet. Further, the present disclosure may be supplemented by light strobe and/or GPS devices, which allow another diver to precisely locate a distressed diver. A diver may activate the present disclosure by depressing a button or by pulling a rip cord or other methods. In one embodiment, the present disclosure allows replacement of the independent source of pressurized gas, making the present disclosure reusable.