fire smoke sensor alarm fire protection smoke detector pelectric sensor home security alarm system

welcome to our store,we are devoted to offer products with reasonable wholesale price and fast delivery. our company is professional in e-business,your order will be sent out within 1-3 days after we receive order payment. you will be satisfied with the shopping experience in our store.look for long term business with you. please check the size information carefully before you place the order, it will show on the description of the product. all dimensions are measured by hand, so it's normal have some little deviations, it usually around 2-3cm, please understand