The Passive Infrared Sensor (PIR) sensor module is used for motion detection. It can be used as motion detector for security systems or robotics. It works on 5V DC and gives TTL output which can be directly given to microcontroller or to relay through a transistor.It consists of...
Photosensitive resistance module's most sensitive to ambient light, commonly used to detect environment around thebrightness of the light, or MCU trigger relay module, etc. Module in the environment light intensity than set threshold, output high level DO end, when the...