Features: Made of high quality material, solid, durable, high sensitivity and good performance. Special designed gas detector for keeping your and your family"s safety. Compact and easy to install, flammable gas detector with 85db alarm. 12V model with non-polarised (reversible) power terminals for easy wiring. It can detects propane, butane, LPG, natural, town, coal, common flammable gasses. Suitable for leisure craft, vehicles, campervan, RV, yacht and so on. Gas Detector Sensor Alarm only, other accessories demo in the picture is not included Specification: Material: ABS, Electronic Components Size: app.11.5 x 7.2 x 4.8cm/4.53 x 2.83 x 1.89in Color: White Quantity: 1 Pc Product Parameters: Working Voltage: DC9-16V Quiescent Current: 90mA Alarm Current: 100mA Rated Power: 0.01W (DC12V power supply) Alarm Concentration: 10% LEL Alarm Sound Pressure: 85DB/for M Installation Method: Wall mounting Alarm Mode: Sound and light alarm Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Gas Detector