Please kindly noted that this item is sold by sunflower from Joybuy marketplace. Smart WiFi Door Sensor,Wireless Window Sensor Real-time Message Notification,Home Security Door Open Entry Sensor Feature: 【Your Personal Housekeeper】 Instant notification to your phone immediately when door or window is opened or closed. As a result, you don't have to worry about your baby going out of house without notice, will easily KNO-W when your aged parents leave or arrive home and even can be clear when someone enters your shop, office and Comp-any reception, etc. Keeping you safe and informed all the time 【Full PEAC-E of Mind】The door sensor provides 24-hour monitoring. Even you are far from your home, garage, car, SHE-D, and garden, etc, You can check door/window's status with free Smart Life app, anytime and anywhere. No need to be concerned about whether you have forgotten to close door/window and whether someone BREAK-S into 【Everything is under Control】Support checking unlock/ lock records and battery level on app. Never worry about missing any important MOMEN-T or running out of battery. If you install more than one door Sensor in different places. All the statuses of doors and windows will be displayed simultaneously within the app so that you can easily KNO-W what you want at a glance 【Make Life Easier】 Wireless door Sensor is compatible Assistant. You can KNO-W the status of doors/windows by giving voice commands to them. Such as, “ Automation scenario can be set up based on condition. For example, the smart light of the bedroom will be automatically TURNE-D ON while someone opens the door, giving the appearance that someone is at home 【SHAR-E with Family】SHAR-E Wi-Fi door sensor with family member via free Smart Life app to SHAR-E sense of security. No need cumbersome installation tools Product parameters: Product type: smart WiFi door sensor Rated voltage: 3V Rated current: 10mA Input voltage: AAA1.5V x2 Alarm Current:≤70-120 MA Low power undervoltage:≤2.7V WIFI: 2.4GHZ IEEE 802.11b/g/n Magnetic control distance:≤10mm Working temperature:-10°C-50°C Working humidity:max 95%RH Product size: 7x2.5x2cm/2.76x0.98x0.79 inch Package size:7.5x5x2.5cm/2.95x1.97x0.98 inch Gross weight:34g/0.075 lb The Package Include: 1 x Smart door sensor 1 x Use manual