Tank Pool Water Level Float Switch Sensor

GY-50 L3G4200D 3-Axis Gyroscope Sensor Module. Designed for measuring angular motion.

GY-68 BMP180 Atmospheric Pressure Module. An electronic module identified by its model and function.

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.

IR Infrared Obstacle Avoidance Tracking Sensor Module. Designed for infrared obstacle detection.