Inductive Doorbell Voice Reminder

Induction doorbell voice prompter-farther/louder/stronger.
No need for power supply-dry cell or USB charging/smart chip.
A variety of pleasant ringtones can be switched at will.
Automatic induction voice broadcast.
Three-step volume adjustment-weak/medium/strong can be switched freely.
No installation required-easy to paste.

What’s in the box
1x Inductive Doorbell Voice Reminder