Smart Pir Motion Sensors: Wifi Motion Detector With App Notification Alert, Product Details IR MOTION ALERT SENSOR--APP ALERTS ANTI-DISMANTLE: Wireless PIR motion detectors,10 meters detection distance,120 effective detection angle, Whether day or night can be real-time monitoring. Once movement is detected or when disassembling with external force, instant notifications will be sent to your devices within a few seconds. Make Your Home Smarter. BUILT IN SMART HYGROMETER AND THERMOMETER: Except for motion tracking, 3-in-1 Smart Motion Sensor alarm access temperature and humidity accurately,Remotely monitor temperature humidity. Send alerts via app when temperature or humidity goes out of preset value.(Support Alxea voice control to query temperature and humidity, and the alerts are sent via the App) DUAL POWER SUPPLY AND LINKAGE FUNCTION: Motion detector alarm indoor can be powered by the included USB cable(included) or CR123A battery(included). More stable to receive alert.Long-term power supply,say goodbye to power outages. It can linkage with other smart home products, such as smart lights or door sensors, etc. Setting custom scenes in your smart home system, for example, turning on the lights if motion is detected. 2.4GHz WiFi One-KEY CONNECT EASY SETUP: Don't need home gateway,you can easily achieve the intelligent control of home appliances,simple operation,easy to use. SECURITY ALARM SYSTEM--CUSTOMERS: We guarantee that our 3- in-1 Infrared sensor alarms are qualified, and provide a two-year warranty. If you have any questions about the home security sensor alarm system, please feel free to contact us. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.