X-Sense Smart Smoke Detector Fire Alarm With Replaceable Battery, Wi-Fi, Pack Product Details Note: The alarm is directly connected to the app via Wi-Fi and does not require SBS50 base station Real-Time Notifications: Control the XS01-WX smart smoke alarm remotely via the mobile app and get quick app notifications for alarms, faults, and low battery warnings Direct 2.4 GHz Wi-Fi Connection: The battery-powered smoke detector can be connected to the X-Sense Home Security app via the 2.4 GHz Wi-Fi network without a base station 10-Year Sensor Life: This smoke alarm comes equipped with a photoelectric sensor that detects slow-burning and smoldering fires and has a long lifespan of up to 10 years Fast Fire Dispatch Within Just 3 Seconds: As a subscriber to the Protect+ Premium which provides 24/7 professional monitoring service, when an alarm is triggered, you will receive a message from the monitoring center within 3 seconds to verify the emergency. After the emergency is verified, a fire truck will be dispatched immediately Device Sharing Feature: Using the X-Sense Home Security app, you can share your devices with up to 12 different app accounts so the shared users can receive real-time push notifications Mini and Compact: Measuring only 3.0 1.9 in (78 48 mm), this fire alarm with a replaceable battery is small and ultra-slim, making it easy to take along when you travel 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.