USB communication cable with an M12 female connector, used to calibrate Aqualabo water quality sensors from a laptop.

Why you need it: a sensor connected to a Wavelet reports through the telemetry platform, but calibration is done directly against the sensor with the manufacturer's software. This cable gives you that direct USB connection without disturbing the Wavelet wiring — useful for scheduled recalibration of pH, conductivity, and dissolved oxygen sensors on an unattended station.

Note: this is a calibration and service cable, not a telemetry cable. It does not connect a sensor to a Wavelet — for that, see the M12 sensor connectors.

Also see water quality instruments and calibration solutions.