Our propane gas detectors are designed for use in recreational vehicles. Propane can pose a safety hazard when it reaches certain concentrations in the air, so having a reliable alarm system is essential for safety. This detector activates when dangerous levels of propane gas are detected. It features a loud buzzer alarm system and includes a test/reset button to test the unit or temporarily silence the alarm if needed. The reset/mute function allows you to quiet 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 (5 years) Specifications: Power supply: 12 VDC Working voltage: 8–16 VDC Operating temperature: -31°F to 150°F (-35°C to 66°C) 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: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement may vary by +/- 1-3cm due to manual measurement.