- After it powers off, it memorizes the previous melody.
- No need to re-select the favorite melody.
- 4 Modes: Sound only, flash only, sound & flash, sound & light on.Light on mode can turn into a night light.
- Memory function: After the power is turned off, remember the music set before. No need to set music again.
- Self-powered doorbell that requires no battery,Don’t worry if the battery has power, so Don’t miss important visitors.
