window sensor with LoRa

water leak detector with voice alert direct from Wanlin Fire Protection — 12-year factory experience, WL-HS105 certified CE/FCC/RoHS/REACH/ISO9001/NFPA 72. Key specs: 4G + WiFi + GPS + Accelerometer Fall Detection, 4G + WiFi + GPS + Two-Way Voice + SMS + Push + Phone Call. No monthly fees, 4G cellular backup, DIY installation, expandable to 50-100+ sensors.···