Shearwater has issued a recall on their yellow diving transmitters which were sold from June 2017 through November 2018.
The transmitters can fail to signal the tank pressure due to interference while using two transmitters in the same dive. This poses a drowning hazard to divers.
Consumers should immediately stop using the recalled transmitters and contact the firm to arrange a free repair or exchange of the transmitter.
Links and more details can be found on the Recalls and safety notices for diving gear page.