★ Free APP mode, for Tuyasmart, one-click WiFi or AP mode to connect wifi. Long transmission distance, up to 45 meters, and strong network signal. ★ Can work independently without hubs and is compatible with and home. Ultra-long standby time ★ Built in batteries, of which standby time last for 5 years. By connecting WIFI (2.4G only) and mobile phone connection, alert will be pushed to mobile phone via APP when the abnormal status detected. ★ This smart burglar alarm has a very comprehensive performance, can connect and family, achieve sound control, is very simple, the quality is very good, is a good helper to protect your home security! ★ 1 Year Free Warranty + Lifetime Technical Support NO RISK of PERSONAL INFORMATION. IF YOU HAVE ANY PROBLEMS(like refund,return,replace,etc), please feel free to contact us.We will reply you within 24 hours., Manufacturer: Sonew