383 products found
The DHT11 is a basic, low-cost sensor that measures both air temperature and relative humidity. It comes with a calibrated digital output, making it very easy to hook up to an Arduino or other microcontrollers. It is commonly used in weather stations, home climate monitors, and automated greenhouse ventilation systems.
The PIR Motion Sensor HC-SR05 detects movement by sensing changes in infrared heat given off by people or animals. When it spots motion, it sends a simple signal to your microcontroller. It is widely used in DIY security alarms, automatic lights, and smart home systems to detect when someone enters a room.
Female header pins are small plastic strips containing metal socket contacts that you can solder onto circuit boards. They let you plug in male jumper wires, sensors, or other modules securely without permanent wiring. They are commonly used in custom PCB designs and DIY electronics to make modular, removable connections.