Notice: Due to air traffic control, there is no battery inside the product Smarter and safer Support Tuya smart life, it can be linked to all tuya version for smart home products. Make your life more convenient and safe. Support remote control for Android & IOS When you leave home, it will push notification message to you when the door/window opens or closes, so you can discover the intruder in time. At the same time, you could share the device to your family members and track the history of sensor activities. PGST original technology The current of our wifi door detector is about 35uA, the smaller the working current, the longer the battery working time. Energy saving and low power consumption, it means that you do not need to replace the battery frequently. Notice: Due to air traffic control, there is no battery inside the product. Low Voltage Alarm APP notification of low battery, you can changee batteries in time Protect Important Areas Can install on door, window, drawer, document cabinets, etc. And named it, you can know which door was opened. How to connect to wifi?