Rain Drop Sensor analog and digital out for Arduino etc.

Prototype Sensor Shield Sensor Expansion Board Robots Shield for Arduino R3

Arduino Compatible UNO R3 PLUS Sensor I/O Shield Atmega328P 16U2 Expansion Board

Digital DHT11 Temperature and Relative Humidity Sensor Module for arduino

Photoresistor Photosensitive Sensor Module Light Detection Light for Arduino

Prototype Sensor Shield Sensor Expansion Board Robots Shield for arduino UNO R3

16CH Analog Digital MUX Breakout Board CD74HC4067 Precise module Arduino