The batteries used in the transmitters can fail to emit a low battery warning leading the user to believe the transmitter is functioning and not generate a warning.
Throat collars have been decertified by BNQ in Canada due to the risk that a skate blade could penetrate the collar, posing a laceration hazard to the throat.
The plastic cover on the charger's exchangeable plugs can come loose and separate, exposing internal components that pose an electrocution hazard if touched while the plug remains in a live socket.