1 Gas Leak Detection System We supply ‘State of Art’ and very reliable and dependable Gas Leak Detection Systems from our Japanese Company, New Cosmos Electric Co. Ltd. Cosmos was possibly the first company in the world to have invented a Domestic Gas Leak Detector way back some 50 years ago. Range of products today includes small Domestic Gas Leak Detectors to simple Gas Leak Detection System which only gives an audio-visual alarm as also highly sophisticated integrated system,