NE555 Timer Switch Adjustable Module Time delay relay Module DC 12V | Electronic SolutionNE555 Timer Switch Adjustable Module The NE555 Timer Switch Adjustable Module brand new and high quality delay turn on module. Using high performance timing CPU design. The power indicator LED and switch trigger timing indication LEDs. The output can be connected to AC 250V 10A DC 30V 10A load. There is the chronopotentiometry regulation time, adjustable from 0 to 10 seconds by default, or by changing the capacitance adjustment time longer.

• High-Noise-Immunity Inputs

The item in the image is an Easy GSM Board

5: long stable life

Its ripple is also low to 50mV

The module includes an electret microphone to record your message and push buttons allow for record

Iout = -4mA 2

Suitable for developers and maintenance personnel

RS-485 standard EIA / TIA

4th pin is RS for registers choice

Raspberry Pi B+: Diver Raspbian

This is a membrane keypad with no moving parts

you can directly enter the audio signal