Model No: SC-2003A-D Product name: smoke detector Description: 1.Technique parameter: Respond the air: Coal gas, gas, liquefied petroleum gas. Report to the police the density: Coal gas: 0.1-0.5% Natural gas: 0.1-0.3% Liquefied petroleum gas: 0.1-0.5% Work power supply: 9-15DVC Work electric current: 10-22mA Report to the police the volume: ÃÂÂĢ‰Â¥85 db Respond time: ÃÂÂĢ‰Â¤ 20 airs density but extension Size: 106*35 (mm) Working environment: Temperature-10-50, relative humidity< 97% 2. Attention: Do not install in the outdoors, a spirit a place for, changing spirit, door etc. breeze measuring fluxion strongly, outrunning 80 °C, very damply, there is article will reporting to the police machine with using spirit equipments insulating. Avoiding the large quantity usage fix the chemistry product. Do not want to dismantle to unload to fix to report to the police the machine by oneself, take place to break down the hour. 3.Gearing: Make sure the combustible air and the specific weight of the air, then install to fix at be apart from spirit source radius 1.5 M including position. 4.The examination maintains 1.Examine the method once a month: Report to the police the normal work in machine appearance next, keep on 5 seconds spray to pore into the combustible air,5-8 sound and lights reports to the police, meaning the function normal. 2.Examine the method once a week: Press to report to the police the machine test key, loosen after producing a sound means the function normal. 3.Usually spread the machine that feels with vacuum or its method clearances ash dust and oils enter the pore