HUWOO Wireless Doorbell Door Bell Chime Waterproof Push Button 1000+ Feet for Classroom/Home/Office/Business/Store（1 Battery Receiver+1 Plugin Receiver+1 Button）

• 🔔Battery Operated Doorbell: This wireless portable doorbell does not require an electrical outlet, you can use it as an ordinary doorbell for home, classroom, office, business,you'll always be aware of your visitors. you can also use it as a call bell for the elderly, children, patients, disabled, pregnant women and other family members who need help. 🔔Waterproof/Dustproof: This battery powered doorbell is powered by 3 AAA batteries and can work normally within a range of 500 feet, whether you are upstairs, downstairs, in the basement, garage, garden, or yard. It is also IP55 waterproof and dustproof, with higher sensitivity and lower power consumption. 🔔Easy Installation in Minutes: This wireless doorbell is easy to install and does not require any wiring. The receiver only needs to install 3 batteries, and the doorbell button can be quickly installed using the included double-sided adhesive. 🔔Ringtone choice & Memory Function: This battery doorbell chime has 5 volume levels, from mute to 120DB, with 55 ring tones to choose from, you can change the default ring tone,and you can set different ring tones for different buttons, easy for you to distinguish faster. after a sudden power failure to re-power, it can retain the previously set ring tone, no need to reset the ring tone. 🔔Lifetime Warranty: Our wireless doorbell is FCC, CE, and RoHS certified. We provide customer service and support for our products and offer lifetime warranty and 24-hour customer service. Your satisfaction is our top priority, Manufacturer: HUWOO