Description: Hot wire type sensor -easy installation and maintenance -loud sound signal of 85 db at alarm mode -three-year limited warranty If you would like to look at gas alarm (combustible gas alarm), please contact us, we will reply you at the first time. Our gas alarms have own perfect quality, steady performance, reasonable price; hope we could help you on business. Summer pan Size:110mm*70mm*40mm Weight:228g/pc Package size:58.5cm*28.5cm*53.3cm