Check the listing for details. Wireless Door or Window Sensor for Wireless Cellular Alarm System STS3-DORP. Color: White, Condition: New. Listed at 7.99 USD. ★★★★★★★★★★★★★★★★★★★★★ ✅ CLICK HERE FOR FULL DESCRIPTION ✅ ★★★★★★★★★★★★★★★★★★★★★★ ⭐⭐⭐⭐⭐ | Wireless Door or Window Sensor | This wireless door or window sensor connects to our wireless cellular alarm system. Door or Window Sensor Slim Design Built-in Panic Button Double-Sided Tape for Easy to Install Functions Automatic Bypass Feature Allows arming with door/window open Does not scroll opened zones on screen No Door Chime Can be set to alarm when opened and/or closed Compatibility Compatible with our STS-309 and STS-310 alarm system. Package Contents 1x Wireless Door/Window Sensor 1x Double-Sided Taoe 1x CR2032 Battery Fast Shipping We usually ship orders the same or next business day! We ship by the cheapest carrier, USPS, FedEx, or UPS (If FedEx or UPS have cheaper rates, we will automatically ship using that carrier. You may request we only ship by USPS by adding a note in the order.) Warranty & Returns All components come with a 30-day limited warranty directly from us. We will be happy to exchange any component that does not work or stops working within 30-days of purchase. Optionally, you may add a 1-year or 2-year warranty through Square Trade at the time of purchase. Due to the super low price we are offering on this product, we do not accept returns for any reason. However, if you are unhappy with the product, please contact us and we may be able to offer you an upgrade option (dependent on current inventory.) Contact Us Use the "contact seller" link to send us a message and we generally reply within 1-3 days (Mon-Fri). Copyright @ 2022 All Rights Reserved