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74HC157 (Quad 2-input Multiplexer)
Coating : Nickel (Ni-Cu-Ni)
Built-in Chip antenna
however you can load different firmwares to make your own applicaiton on the modules' memory and processor
Sound Recorder Module Photoresistor 74HC157 (Quad 2-input Multiplexer)Introduction : ISD1820 is a small Voice Recorder and Playback module that can do the multi segment recording. The user can achieve a high quality of recording (for 8 to 20secs) for each application with the adjustment of the on board resistor. This module use is very easy which you could direct control by push button on board or by Microcontroller such as Arduino. Features : Operating Voltage: Wide power supply ranges from 2. 4V to 5. 5V DC With the
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