X-Sense Wi-Fi Hygrometer Thermometer Indoor, Temperature & Humidity Monitoring with App Alerts, 4 Sensors & 1 Base Station

Bundle Included: 4 STH51 thermo-hygrometers & 1 SBS50 Base Station Free Real-Time Alerts: Get quick app alerts when your home's smoke/CO alarm is triggered; stay up-to-date on your home's safety in real time so you can take immediate action Highly Accurate: Swiss-made high-precision sensor; temperature accurate to ±0.36°F (±0.2°C) with a -4–140°F (-20–60°C) range, while humidity is ±2% RH with a 0–100% RH range Connect 50 Devices to the Base Station: Supports SAL51 listener, XS01-M smoke alarm, XC01-M CO alarm, SWS51 water leak sensor, and STH51 thermo-hygrometer; customize your network to monitor your home safety anytime, anywhere