Our propane gas detectors are designed for use in recreational vehicles. Propane can pose an explosion risk when present in certain concentrations in the air, making it a significant safety concern in RVs. These propane alarms help detect dangerous levels of propane gas and provide an audible alert to help protect your vehicle. LOUD AUDIBLE ALARM SYSTEM Features a test/reset button to test the unit and temporarily silence nuisance alarms. The alarm is easy to hear, allowing for a quick response even during the night. A reset/mute function can be used to temporarily silence the alarm while ventilating the area. Color: White Material: ABS Buzzer alarm triggers under the following conditions: 1. Voltage is less than 8V 2. Sensor failure 3. High propane concentration 4. End of service life (propane detector should be replaced after 5 years) Specifications: Power supply: 12V Working voltage: 816V Operating temperature: -31F to 150F (-35C to 66C) Relative humidity: 15% to 93% Housing dimensions: 4 inch W x 2.5 inch H x 0.75 inch D (10.2 x 6.5 x 2.0 cm) Product weight: 73.1g Accessories weight: 8.6g Wiring length: 14cm Package Contents: 1 x Propane Detector 1 x English Manual Note: Lighting and display settings may cause slight color variations between the product image and the actual item. Measurement tolerances may vary by +/- 13 cm.