Door Entry Chime for Store / Office - This means you can receive alerts when you are busy in your store / office, the wireless door chime will let you know the first time if you have a guest to come in.
Wireless Door Sensor Alarm for Kids Safety - You can used the door alarms security to deter your young children from going outside without permission, along with the hopes that it will deter someone from entering.
Door Open Chime for Elderly & Kid - It is perfect for elderly & Kid use, will notice you when they get out or come back home.