My One is producing interference or noise.

Your One stethoscope should provide a low-noise, high-quality signal. However, if the stethoscope used on clothing or not applied correctly to the patient, artifact sound can be produced. To reduce or eliminate such noise, simply apply the probe as recommended, making good skin contact with the patient.

There are some interfering noises that can occur. Potential culprits are listed below, with remedies:

- Radio stations or electromagnetic pickup: Move One to a location that does not have strong electromagnetic fields. One has been hardened against such interference, but it is technically possible, albeit unlikely, that noise can be induced by such sources.

- Continuous loud buzzing: The diaphragm is loose. Tighten the diaphragm retainer ring.

- Continuous loud buzzing: One is connected to other equipment that is either producing its own buzzing or noise, or has grounding problems that are inducing noise in the system. Try disconnecting One from the equipment and listening. If the problem goes away, it's not the One. If it persists, check the diaphragm et al.

- Other noise: Dust or moisture may exist inside the Probe. See the Instructions on Cleaning the inside of your One electronic stethoscope.