User Manual

MicroSound V22
1. Brief introduction
This is a PIR motion sensor activated audio player. When the human body motion is detected, it will play
audio automatically. It looks like a cat's eyes, not depending on light. Even in the dark environment, it can work
stably and reliably, overcoming the shortcomings of light induction.
According to different applications, you can change audio files to have different sound effects at any time.
2. Product features

Support MP3 audio file playback, excellent sound quality.

Two play modes: single cycle play mode(play single audio files every time), sequential play mode(play audio
files in sequence).

Two levels of volume, small or maximum.

Human body induction, induction distance up to 4 meters.

Built in 32Mbit(4MB) SPI-flash memory.

Power-down memory function.

Audio files can be changed and downloaded from PC by USB data cable.

3 AAA batteries or USB power for power supply.

Built in 8Ω1 watt speaker.
3. Electrical parameters
Power Supply
DC4.5V~ 5V stabilized voltage supply
Working Current
Sleep standby mode
≤60uA
Playing mode
≤180mA(DC4.7V)
Audio Format
MP3
Bit Rate: 8~320Kbps
Audio Output Power
8Ω/1W(typical value)
Infrared Induction Range
≤4m(120°)
Volume
≤90db
Working Temperature
0~30℃
Working Humidity
10~85%RH
4. Appearance introduction
This product is easy to use. Support audio file replacement on computer through USB interface, but not support to
insert SD card. It includes a micro USB interface, two small buttons (A and B), a slide switch.