Electro-medical Devices are defined in IEC60601-1 as “equipment, provided with not more than one connection to a particular mains supply and intended to diagnose, treat, or monitor patient under medical supervision and which makes physical or electrical contact with the patient and/or transfers energy to or from the patient and /or detects such energy to or from the patient”. Examples of products fitting this definition include battery operated thermometers, MRI, endoscopy cameras, infusion pumps and patient monitors. Accessories used with such devices can also fall under this standard.