Ⅰ. Introduction WL-FD-A IOT wireless smoke (fire) detector is used to detect smoke in indoor and outdoor air concentration and automatically send alarm signals via ZigBee wireless network to the mobile intelligent terminals and other control equipment. This product its unique professional performance, widely used in smart home, smart hotels, intelligent building systems. . Ⅱ features support ZigBee HA protocol ZigBee Device Type: Repeater installation does not require any cables compatible wulian alarm device can be fixed in any position indoors patented design, small size, light weight, nice intelligent analysis of the authenticity of the fire immunity capacity, high sensitivity