Review on Wireless Doorbell Set For Homes, Businesses, And More – SadoTech'S Battery-Operated 2-Door Ringer And Plug-In Chime Receiver With LED Flash In Sleek Black Design by Jayson Sharma
Good for Classroom good for me
Teacher here and I needed something for getting students' attention that wasn't the annoying old-school bell or shouting. The second control I placed outside of my classroom door because sometimes I can't hear someone knocking even if the students are at a normal noise level. Wish it was a little louder but overall so happy for whoever had the idea of this for classrooms!It is not a motion-detection doorbell.Don't know yet how long the battery lasts.Not Bluetooth.
- I use this in my classroom for noise control and it works great
- Incompatible with certain types of on-site security systems
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