Product Type: Voice Recording Module Kit. Material: ABS Operating Voltage: DC 3V~5V (5V recommended). Recording Time: 8S, 12S, 20S Circuit Pin Functions: Pin 11 is the positive terminal of the power supply (VCC), pins 8 and 14 are connected to the negative terminal of the power supply (GND), pin 1 is the recording terminal (REC), high level is enabled, when REC goes high, the chip starts recording, pin 2 is edge trigger playback (PLAYE), at high level. This end is displayed. , the chip starts playback, and PLAYE can be released after playback starts. Pin 13 is recording display end (RECLED). In the recording state, this end is low and can drive the LED, pins 4 and 5 are microphone input (MIC), pin 6 is connected to the automatic gain control (AGC) end, and pins 7 and 9 are connected to the speaker output (SP+, SP+). -), can be directly. Drive speakers of 8Ω or more, Pin 10 is connected to the oscillation resistor (ROSC), and the oscillation resistor is connected to GND. By adjusting the oscillation resistor R4 connected to the ROSC terminal, the speed of the voice can be adjusted steplessly. The shorter the recording time, the better the sound quality, and the longer the recording time, the worse the sound quality. Package List: 1 x Voice Recording Module Kit. Note: The resistance cannot be too small, so 100K or more is recommended. ABS Voice Recording Module Kit Ideal for DIY Recording Boards Student Experiment Kits Recording Time 8-20 seconds 35-18 0091 //////////////////// ⭐️Opened for photography, but it is an unused item. Therefore, it may be considered as "like new". * Many other products are on sale! 　We welcome combined purchases with other products. 　Please take a look at #shiro's SHOP * Please understand that it will be shipped in simple packaging. 　Please purchase (⁎ᵕᴗᵕ⁎)