Add-On Detectors Only—SBS50 Base Station Not Included: Includes 3 SWS51 water leak detectors for expanding an X-Sense SWS54 system. The SBS50 base station required for smart features must be purchased separately
Without SBS50—120 dB Local Alarms Only, No App Alerts: Each SWS51 detector can sound its built-in 120 dB alarm when water is detected, but the detectors do not connect directly to Wi-Fi or the X-Sense Home Security app. An SBS50 base station is required for real-time phone notifications and other smart features
