德国采购需求：常规火灾报警系统，常规烟雾探测器，消防产品

I'm interested in purchasing an optical smoke detector and would like to find out where I can buy one in Europe. Could you please provide information on any distributors in Europe or specifically in Germany? Additionally, if you have any recommendations for reliable suppliers or shops that carry this type of product, that would be greatly appreciated. Looking forward to your response!