Voice filter circuit using LM387

Adopt LM387's voice filter circuit and a filter circuit composed of voice frequency range in series, and its frequency band range is 360HZ-3KHZ.

Self developed and designed Decorative Wall Clock with night light.

With light sensor clock hand which will light up at night, while turn off automatically in the daytime.

It will be a Wall Light Decoration for home, for party decoration, has nighttime glow in the night, reliable quality.

Clock hand has different colors show up in the night.

OEM & ODM is highly welcomed!

Night Light Clock

Night Light Clock,Wall Led Light,Wood Wall Clock,Wall Clock Light Up

Guangzhou Huanyu Clocking Technologies Co., Ltd. , https://www.findclock.com

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