This is a very small light sensor. A photo resistor (also known as a photodector, or photocell) changes resistance depending on the amount of light it is exposed to.
The HC-SR501 is a passive infro-red (PIR) sensor which is used to detect motion based on the infrared heat in the surrounding area.
The H8054 PIR motion detection module provides basic motion detection in a small package. Compatible with the Arduino and Raspberry Pi
YDLIDAR F4 LIDAR is a 360-degree two-dimensional laser range scanner (LIDAR)
YDLIDAR X4 LIDAR - 360-degree two-dimensional 10 meter laser range scanner (LIDAR).