This product is a high-stability combustible gas detector (hereinafter referred to as the detector) which is used to detecting the leak of combustible gas, the detector uses the most advanced semiconductor gas sensitive element,working steady,long life span,simple installation,the detector is built-in central control MCU, and between each functional module,directly or indirectly connected to MCU I/O port, through curing in MCU internal procedures to complete the detector of each function module to work properly, so that the detector can work more stable. safe and reliable. This product is suitable for the security monitoring of family homes, buildings, hotels, apartments, villa etc and the place of combustible gas .