Users can develop allergic reactions to the stainless steel casing, materials used in the strap, or adhesives used to assemble the product, resulting in redness, rashes or blistering where the skin has been in contact with the tracker.
The meters can fail to give an accurate voltage reading, resulting in the operator falsely believing the electrical power is low or off, posing an electrocution hazard.
When used with certain power supplies, the reflected beam smoke detectors can fail to send a signal to the fire alarm control panel that sounds the alarm and fail to alert occupants of a fire.
