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
The RunCam 2 HD camera is designed for the FPV Racers. This mini HD camera provides high-resolution video and images at 1080P @60fps or 720P @120fps.
TF02 highly optimizes the energy system, product structure, fusion algorithm, and shell material so as to achieve a 22-meter-long range and a more stable ranging performance.