Review on Wireless Doorbell For Homes, Apartments, Businesses, And Classrooms - Easy-To-Use With 2 Door Ringers & 1 Plug-In Chime Receiver - Battery Operated And LED Flash - SadoTech (White) by Kazuki Vong

I ordered this to use as a classroom management tool. I opted for the 2 push buttons so that I can keep one and leave one at my desk for use by substitutes in the future. Easy to install and setup. My one "complaint" is the lack of good tones for my specific use. It seems like the sounds were normal doorbell sounds and then Christmas tunes (which I love, but not for a classroom in August lol). But obviously I bought a doorbell, so I can't be too upset that they're regular "ding dong" sounds haha.If you're purchasing for the same purpose, keep that in mind though. The two push buttons are useful, but the sound selection is pretty blah. Volume is pretty loud, but I haven't tested it in a loud classroom full of upper elementary kids yet.