Fireboy-Xintex Propane Fume Detector w/Automatic Shut-Off & Plastic Sensor - No Solenoid Valve - Black Bezel Display. A gas meter is included with the Fireboy-Xintex Leak Detector but a 'No' for the solenoid valve is preferred as it doesn't have the same sensitivity as the metal sensor in the case of the older fashioned Carbon Monoxide (CO) detectors. The Fireboy-Xintex Leak Detector w/Automatic Shut-Off & Plastic Sensor reacts by sending out a signal to the control panel to cut off the gas. This home fire safety device will detect a leak one to two seconds before the alarm sounds and will turn off the gas to your stove eliminating the risk of severe burns. For a great way to make sure you are safe from propane gas choose the Fireboy-Xintex Leak Detector w/Automatic Shut-Off and Plastic Sensor. Package Contents: Fireboy-Xintex Propane Fume Detector w/Automatic Shut-Off & Plastic Sensor Fireboy-Xintex P-1BNV-R: Propane Fume Detector w/Automatic Shut-Off & Plastic Sensor - No Solenoid Valve - Black Bezel Display