1.Smoke GAS CO detector 2.Independent alarm,easy install 3.OEM CCC ISO 4.Lowest price 5.AC 110V-240V /DC9V 115dB sound Description:1.GAS detector,Smoke detector,CO Detector,Scarbon monoxide detector,sending wireless signal alarm independently.2.while detector density reach the limited,it gives off alarm warning,cause people attention.3.Manual test,auto reset after alarm.4.Network out put/led ...