Risinglink Pd201w 85dB, Power Outage Alarm Household Sensor & Alarm

This smart device diligently monitors your GFCI or outlet for power failures around the clock. Powered by a USB charger and equipped with an internal backup battery, it ensures continuous operation and sends out alerts via Wi-Fi the moment a power interruption is detected, keeping you connected and aware, anytime, anywhere. This device is designed to quickly alert you in the event of a power failure, provided that the Wi-Fi connection and internet service continue for a few seconds post-power loss. It will attempt to send power failure alerts at pre-set intervals multiple times. However, to preserve the internal battery, it will not do so indefinitely. In the event of a whole house power outage where Wi-Fi is lost simultaneously, the device may not be able to send an alert. To ensure you still receive these important alerts, we suggest the use of a uninterruptible power supply (UPS) for your Wi-Fi router. A UPS will maintain power to your router and keep your internet connection live for a period, allowing the device to communicate the power failure alert to you. The “device offline” alert notifies you when the device loses its connection with our cloud server. This alert is typically triggered by a loss of WiFi connection or an internet service outage. That the “device offline” alert is not generated in real-time, unlike the “power off” (power failure) alert.