This monitors power outages via the "Smart Life" or "Tuya" app using a 2.4GHz Wi-Fi connection. Its compact design includes an additional socket, allowing multiple appliances to connect simultaneously. The device features a 110dB alarm with three adjustable volume levels and a built-in battery for up to 12 hours of alerts. Price drops from $49.99 to $24.99. Shipping is free for Prime members.