X-Sense Wi-Fi Listener for Smoke & Carbon Monoxide Detectors, SBS50 Base Station Accessory (Not Included), Model SAL51

X-Sense Wi-Fi Listener for Smoke & Carbon Monoxide Detectors, SBS50 Base Station Accessory (Not Included), Model SAL51

X-Sense Wi-Fi Listener for Smoke & Carbon Monoxide Detectors, Free Real-Time Alerts, Works with SBS50 Base Station (Included), Not for Smoke or CO Monitoring, Model SAL11