Classroom Doorbell Wireless Doorbell IP66 Waterproof 115dB with 56 Chimes Door Bell Ringer Wireless 1000ft Range Battery Doorbell Chime Kit 7 Levels Volume Mute Mode Doorbells for Home Kid Room Office
LetsWill
SadoTech Waterproof Wireless Pager - Elderly Monitor & Classroom Doorbell, 52 Chimes
SadoTech
SECRUI Wireless Doorbell, Easy installation, Waterproof, Adjustable Volume, 58 Chimes, Colorful LED, 1000Ft Range, M520+F55, Black
SECRUI
HIPOMOG Wireless Doorbell, Professional Waterproof Mini Doorbell 1,300ft Range Loud Enough with 55 Melodies,4 Volume Levels and Mute Mode Door Chimes & LED Flash (White)
HIPOMOG