The M, MK, E, EK, EA and EKA models require a voltage between 220v – 235v. If voltages are lower or higher than this, then a Buck/Boost Transformer is required. Manual Autoclaves: Automatic Autoclaves: To see more about Tuttnauer autoclave sterilizers: Medical autoclaves like tabletop autoclaves and large horizontal autoclaves Dental autoclaves - ideal sterilizer for dentists Laboratory autoclaves like vertical loadng autoclaves and fast liquid cooling autoclaves Pharmaceutcal cGMP autoclaves for pharma production and pharma laboratory applications