Great question! When we get a device, we try to make sure that anything dangerous is removed, repaired or replaced. We try to make sure that every device we send out has either got a new power supply, batteries and that the cables are all in good condition but as with all things in life, no system is perfect.
So, when you get your new device, remember to be vigilant and check that you are happy that everything is safe. If you have any concerns at all then please get in contact with us so we can advise you or consult a qualified electrician.