Shenzhen Lingbao Electronics Co,. Ltd. locates in Shenzhen China, established in 2002, is a professional manufacturer of fire and security alarm system products ,with more than 12 years experiences,especially in natural gas/LPG/coal gas detector ,the carbon monoxide detector,Compound detector, smoke alarms ,toxic gas detection system. Our products cover combustible gas detector,fixed gas alarm sensor,portable gas detector ,CO/carbon monoxide detector,single gas detector,multi-gas detection Tools,,home wireless smoke detector test,compound gas analyzers,home fire alarm systems,water detector,household gas leak detection tester,gas monitor,water detector,fire alarm,heat detector,home securi ... more