OLAX Smart Mini DC UPS Pro POE-D9 20000mAh 24W backup power for WiFi router helps keep your networking and surveillance devices running when electricity is unavailable, thanks to Zero Switch Time and automatic backup switching. It’s designed for Wi-Fi routers, ONU/ONT devices, modems, and compatible CCTV cameras, while built-in protections help safeguard connected devices against overcharging, over-discharging, and short circuits.