Built-in Temperature Sensor: For accurate measurements.

Four-core Aviation Connector: Convenient for plugging and unplugging.

ABS Housing Material: Durable and sturdy.

Standard Zero Oxygen Calibration Solution: Ready to use, convenient for electrode calibration.

Standard Dissolving Oxygen Electrolyte Solution: Convenient for electrode maintenance.

Standard Dissolving Oxygen Electrode Membrane Cover, Protective Cap, Long Nozzle Bottle Cap, etc.: For long-term use.