Sound Sensor Module

Two-wire temperature sensor with a 1-metre lead. The listing mentions both PT100 and K-type; confirm the sensor type before selecting an interface.

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

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

Infrared Receiver LED 3mm 2-PIN. An infrared receiver for compatible remote-control signals.