Door Alarms Security:This is not just a choice for apartment security, but also a loud safety alarm that can be used for basement, garage, shed, and store door openings. Stay alerted and secure in various settings with its powerful sound. More Than an Alarm: this pager doubles as a one-touch SOS alert system for dementia patients seniors. With the remote control, family members can be promptly notified and provide timely assistance when needed. Window Alarm:The door open alarm uses 2 AAA alkaline batteries with low power consumption, providing over 12 months of battery life. It also features a low battery reminder to ensure timely replacement and peace of mind during use!. Door Chimes When Door Opens:The door sensor chime has different modes to match various scenarios. It can monitor pool and RV doors, and even serve as a door chime for business when entering, ensuring you never miss a customer again!. LIFETIME WARRANTY: Our wireless door alarm are SDOC certified. We offer a lifetime warranty on our products and 24-hour customer service. If you need to purchase additional accessories you can contact us, your satisfaction is our first priority!. Easy to Install:Our door alarm sensor comes pre-paired, making installation a breeze. Simply attach the home door alarm to your doors or windows, turn it on, and it's ready to go. No wiring or electrician required for hassle-free setup. 4 Working Modes:1--Instant Alarm(it alarms when door opens,stops alarm when door closed immediately)2--Entry Doorbell(Just one welcome ring ding-dong) 3--Door Closing Reminder(the sensor emits "dididi"sound every 10 seconds until door is closed)4--Instrude Alarm (Alarm will last for 1 minute if your door is being open). Door Alarm with Remote:The remote control and alarm signal can reach up to 82ft, making it very convenient and effective even if you're on the second or third floor. Adjustable Volume:door alarm with up to 120dB sound. Choose from 5 volume levels(0-120dB)to stay aware of loved ones leaving home and deter potential intruders effectively. Perfect for keeping your kid's or elderly safe.comes with a 90-day free return and a 365-day exchange service.