This module has advanced quality...
This pin header is great for prototyping PCBs. This single-row male 40-pin header can be broken into smaller strips with the use of a wire cutter to fit your desired application. It is an ideal connector for integrated circuits and PCB boards.
The HC-SR501 Pyroelectric Infrared Sensor is used to detect the presence of people. It is commonly used in turning the lights on and off automatically when people arrive or leave. It is very reliable for robot projects which need human detection.
Arduino compatible development board with Nano-based microcontroller USB serial converter ATmega328P and CH340
This module allows you to control high voltage devices, like the home appliances, using a 5V signal. The relay module is capable to work with voltages up to 250 VAC and supports currents up to 10 A, making it ideal for home automation.