The GY-BMP280-3.3 module measures atmospheric pressure and temperature using a BMP280 digital sensor.

FC-28 Soil Moisture Module 3.3-5 V DC. An electronic module identified by its model and function.

DHT11 Humidity and Temperature Sensor Module. Designed for monitoring temperature and humidity.

Infrared flame sensor module for electronics and sensing projects. Check the module specifications and wiring requirements before connecting it.

HC-SR04 Ultrasonic Sensor Module. Designed for measuring distance using ultrasonic signals.

Motor Speed Encoder Sensor Module

• VCC Connect the positive 3.3 5 V power supply
• GND Connect power negative
• DO TTL switch signal output
• AO This module does not work

IR General Purpose Remote Control. A remote control using the stated infrared format.

• Input Voltage: 3.3V ? 5.5V DC
• Module size: 15mm x 11mm
• Stable touching detection of human body for replacing traditional direct switch key.
• AB=00:No-lock High TTL level output;
• AB=01:Self-lock High TTL level output;
• AB=10:No-lock Low TTL level output;
• AB=11:Self-lock Low TTL level output;

Infrared Receiver 3-PIN. An infrared receiver for compatible remote-control signals.