CallToU Waterproof Push Button 1000+ Feet Classroom Home Office Business Store Color:2 Button+1 Battery Receiver Operating Range is 500+ Feet

Operating Range is 500+ Feet in open Area

You can make them in a longer distance so that they will not have the noisy

It comes with a lanyard

car alarm or entrances

you can set the alert to repeat multiple times instead of the usual single beep

CallToU Waterproof Push Button 1000+ Feet Classroom Home Office Business Store Color:2 Button+1 Battery Receiver Operating Range is 500+ FeetMultifunctional Battery Doorbell: This wireless portable doorbell is very versatile, you can use it as an ordinary doorbell for home, classroom, office, business; you can also use it as a call bell for the elderly, children, patients, disabled, pregnant women and other family members who need help. Portable & Indoor & Outdoor: This portable doorbell is powered by 3 AAA batteries, it can still work properly for you when the power is off or there is no