yolink 1/4 mile super long range wireless leak sensor lora enabled smart water leak detector alert notification app alerts history logs sensor with sensitive leak probes, yolink hub required yolink yolink technology<br> “yolink” is a proprietary wireless technology provided by yosmart. which is based on the semtech's lora wireless technology combined the yosmart smart home/buiding protocol, to provide most advanced smart home/buidling devices solution. compared to wifi, bluetooth, zigbee, z-wave and other smart home protocol, it has the advantages of low-power consumption, long-distance coverage (wall penetration), and anti-interference. it is first smart building/home protocol which can be very easily setup and is very low cost, but create a reliable, robust and more secure iot network. <br><br>requirements:<br>1. a yolink hub, link https://www.amazon.com/dp/b07tqlkqlj<br> 2. smartphone or tablet able to run ios 9 or higher or android 4.4 or higher.<br><br>features:<br> compatible with alexa - receive voice announcements of changes detected by sensors in your home<br> works with ifttt - trigger customer automations using ifttt<br> real time status - check the real-time water/moisture status of the sensor via the yolink app<br> battery status - receive low-battery alerts before batteries need to be replaced<br> yolink control - trigger an action by select yolink devices without reliance on the internet<br> automation - easily setup scheduled and automatic actions and responses with the yolink app as well as with 3rd-party integration platforms such as alexa and ifttt<br> <br>specifications:<br>product name: yolink smart water leak sensor<br> product model: ys7903-uc<br>voltage: 3v dc (2* aaa battery)<br> ip rang: ip68<br>working temperature: 0°c~50°c (32°f~122°f)<br>working humidity: ≤100%rh (non-condensing)<br><br>package content:<br>1 x yolink water leak sensor<br>1 x quick start guide