Water Leak Detection with Multi-Alert System: Notifications sent to your phone, plus optional Google Assistant voice alerts Built-in 100 dB siren and LED strobe for prompt alerts Monitor Two Locations Out of the Box: Includes one plug-in master unit (with 1.5 ft detection cable) and one battery-powered sensor Expandable Whole-Home Monitoring: Expands to supports up to 17 sensors total (one master + 16 battery-powered pods) No Hub Required, Easy Setup: Connects to your existing Wi-Fi no hubs, plumber or geeky know-how required. Reliable Wi-Fi + Sub-GHz Connectivity: Sub-GHz wireless link provides extended coverage over 300 ft. indoors or 1000 ft. in open space. Easy App Management: Simple plug-and-play setup with the free AQUILA PRO AI app. Trusted D-Link Quality & Support: 1-Year D-Link Warranty Trusted brand with 39+ years of experience Not compatible with previous D-Link water sensors (DCH-161-US, DCH-S1621KT, DCH-S163).