Fingerprint Module R301T Sound Recorder Module It combines an I2S D/A

It combines an I2S D/A converter with an audio amplifier on one board

So if you are looking for a sensor to detect or measure gasses like LPG

HID devices: keyboards

Operating Temperature Range: -40°C to +85°C

GND : ground

Fingerprint Module R301T Sound Recorder Module It combines an I2S D/AIntroduction: R301T is an optical fingerprint verification module with TTL interface. It has a large storage capacity up to 3000 Image. It works in different conditions of the fingers, whether the fingers dry, wet, light texture, or old. It works in a variety of applications such as access control, safety deposit boxes. It has many functions such as Fingerprint Sensor, fingerprint verification, fingerprint upload and download. User can easily develop