Button for Elderly RF 433mhz Panic Button Emergency Alarm Wirelss Watch Bracelet Old People Android IOS APP WIFI SOS Button for Elderly RF 433mhz Panic Button Emergency Alarm Wirelss Watch Bracelet Old People Android IOS APP Advantages: - APP notice directly, you can get alarm anytime and anywhere - The WIFI host also can connect other 433mhz sensors, like motion sensor, door sensor, water sensor, etc (not include these sensors) - Easy carry Bracelet, super light and comfortable material - International 433mhz protocol, work with almost all 433mhz alarm system -Long work distance for the SOS to WIFI host (15 to 30m indoor, 100m outdoor) - Super power save, long work time (normally more than 12 months) - Popular APP for the WIFI host Application: Home, hospital, old people, kids... Specifications: -Technical Parameters: SOS Bracelet (433Mhz, EV1527, 430K), WIFI host (connect 433mhz sensors, connect 2.4G WIFI) -Woke Mode: SOS send signal to wifi host, wifi host send smartphone notice via APP -APP: eWeLink -SOS Working Voltage/Current: DC 3V/13mA -SOS Transmitted Power: 10mW -SOS Modulation Mode: ASK -SOS Power supply:1*C2032 battery (included), work time more than 12 months for normally use -Wifi HostPower supply: Android charger (not included) Remark: SOS must connect to the include WIFI host or433mhz alarm host, cannot work alone. ABOUT US TOPVICO Electronic Technology Co., Ltd. is a company focus on Home Security&Automation, established in 2011, pay all attention to provide mostdesiredand competitve goods to our customers, that's why we exist, we are here to make your purchase happy, pleasure to communicate with you and improve by your suggestions, thank youdear customers! SHIPPING - Q: How long your goods will be sent out? A: 98%goods will be sent out within 24 hours, others within 72hours - Q: What delivery method? A: Defalutuse Aliexpress online shipping, better guarantee for you,