Subtronics India Pvt. Ltd. Offers Five Channel Gas Detection System without Meter, bearing the model number 3 ST-CH5. Subtronics India Pvt. Ltd. Is an ISO 9001:2000 certified company. Five Channel Gas Detection System without Meter has an operating voltage of 240 V.A.C or 6 V.D.C, in case of mains failure. It is an oxidation type gas detector and can load five gas detectors. Five Channel Gas Detection System without Meter features external siren facility on control panel.