LED lamp power light, the output signal. TTL level output, TTL output signal for low level effectively.

Ability to drive about 100ma, can be directly driven relay, buzzer. small fan, and so on.

Sensitivity can be adjusted through the potentiometer.

Raindrops board and control board are separated, convenient to wire leads.

The raindrops plates of large area, more conductive to detect the rain.

SD Card Module Slot Socket Reader for ARM MCU NEW

This SD Card module can make your SD application simpler and easier

Easily interfaced as a peripheral to your sensor shield module

Read and write into the SD Card using your product through programming

Can be easily used for SD Card MCU/ARM system control such as for MP3 Players

All SD SPI pins output, MOSI, SCK, MISO and CS

Supports 5V/3.3V input

This is a simple moisture sensor for detecting moisture of the soil. Using this sensor makes and automatic watering system. When you are not at home for a long period of time, it can sense that your plat are thirsty.

5.5V power supply, the greater the humidity, the greater the output voltage.