Description: This is a gas alarm sensor, remind you to monitor natural gas safety. A perfect safety tool used in RV, marine, vehicle. It can detect leaks of propane, butane, LPG, natural, city, coal, common flammable gases. It is very easy to use and convenient to install. Features: 1. Unique design of alarm sensor body, high reliability sensor. Easy to install and use.2. Made of premium material, safe and stable. Durable for long term use.3. Two states of indicator light, red light indicates alarm, yellow light indicates error.4. Built-in and output switch terminal pair for integration in external alarm system.5. It is applicable to vehicles, marine, such as RVs, boats, yacht and so on.Specifications: Condition: 100% Brand New Color: White Material: Metal+Plastic Operating Voltage: 12V DC Standby Current: le;90mA Alarm Current: le;100mAWarm-up [ stabilization) Time: 180s Alarm gas level: 10 plusmn5 [% LEL), 0.5 plusmn0.25 [VOL %) Alarm indicator: red LED, flashing Alarm sound level: ge85dB/mFault indicator: yellow LED on, continuous tone Operating temperature: -10C ~ +50CEnvironment Humidity: le95 % RH Installation: wall mounted Size: 11.5*7*5cm/4.53*2.76*1.97in Weight: 151g Note: Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. Package Included: 1 * Alarm Sensor