Our propane gas detectors are used in recreational vehicles. Propane, at a certain percentage in the air, is explosive. In your RV, it's a major safety hazard, so our propane alarms are your best solution. LOUD AND AUDIBLE ALARM SYSTEM - With a test/reset button allowing you to test and silence unwanted triggers, the propane gas detection system produces an easily heard alarm, ensuring a quick response even in the middle of the night. A reset/silence circuit can be activated to temporarily disable the detector while you ventilate. Color: Black Material: ABS Audible Alarm Situations: 1. Voltage lower than 8V 2. Sensor malfunction 3. Propane level too high 4. Propane detector lifespan: 5 years Parameters: Power Supply: 12VDC Operating Voltage: 8-16V Operating Temperature: -31°F to 150°F (-35°C to 66°C) Relative Humidity: 15% to 93% Housing Dimensions: 4 inches W x 2.5 inches H x 0.75 inches D Product Dimensions: 10.2 x 6.5 x 2.0 cm Product Weight: 73.1 g Accessory Weight: 8.6 g Cable Length: 14 cm Package Contents: 1 x Propane Detector 1 x English Manual Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.