The register
Class III constructionChargers and power adaptersClass III constructionMarks a transformer or appliance built to protection class III, as classified in the transformer safety standard EN 61558-1. It is one of the three construction-class marks printed on transformers and power supplies, next to class I (earth symbol in a circle, needs a protective earth) and class II (double square, double insulation).On EN 61558
Climate class NRefrigerationClimate class NRating-plate climate class. The appliance is designed to work in rooms between 16 °C and 32 °C.On Refrigeration
Climate class SNRefrigerationClimate class SNRating-plate climate class. The appliance is designed to work in rooms between 10 °C and 32 °C.On Refrigeration
Climate class STRefrigerationClimate class STRating-plate climate class. The appliance is designed to work in rooms between 16 °C and 38 °C.On Refrigeration
Climate class TRefrigerationClimate class TRating-plate climate class. The appliance is designed to work in rooms between 16 °C and 43 °C.On Refrigeration
Climate preconditioning unavailable (white)Dashboard lightsClimate preconditioning unavailable (white)Climate preconditioning lets the cabin be heated or cooled ahead of a trip, started from a phone app at once or by timer. On a combustion-engined car this symbol means the function cannot heat the cabin, because that needs the vehicle running, or that it is unavailable because of a fault.On Audi
Cold battery (solid blue snowflake)Dashboard lightsCold battery (solid blue snowflake)A blue snowflake appears when some of the energy stored in the Battery may not be available because of cold conditions; charging rates may also be limited. The Battery can be heated by turning on climate controls with the mobile app. The snowflake disappears once the Battery is warm enough.On Tesla
Cold pre-washDishwashingCold pre-washQuick cold rinse (about 6 minutes) for dishes that will stay in the machine until there is a full load. Only a clean filter is needed; no detergent.On Candy
Collision Risk Alert / Active Safety Brake2 meaningsCollision Risk Alert / Active Safety BrakeOrange. Steady with a message: the system has been switched off on the touch screen. Flashing: the system is briefly braking the car to reduce the collision speed. Steady with a message and chime, or with the Service light: the system has a fault; have it checked by a dealer or qualified workshop.Differs by brand.On Peugeot
Collision risk system issue (amber triangle and cars)Dashboard lightsCollision risk system issue (amber triangle and cars)The amber symbol means the collision risk system is unavailable or is working with reduced performance.On Volvo
Collision risk warning (red car)Dashboard lightsCollision risk warning (red car)The red car symbol warns of a risk of collision with a vehicle, pedestrian, cyclist or large animal.On Volvo
Combustion engine only (white)Dashboard lightsCombustion engine only (white)The hybrid vehicle is being driven by the internal combustion engine alone.On Audi
Comfort dehumidifyingHeating & air conditioningComfort dehumidifyingButton and indicator for comfort dehumidifying. In this mode the humidity level cannot be set by hand; on some models pressing the up or down button cancels it.On MAD50C1AWS
Comfort driving modeDashboard lightsComfort driving modeComfort driving mode is selected, suited to roads with poorer surfaces or long motorway journeys. On cars with driving mode selection.On Škoda
Comfort driving profile (white curved road)Dashboard lightsComfort driving profile (white curved road)Shown when the Comfort driving profile has been selected with the driving profile selector.On Volkswagen
Congestion assist (amber)Dashboard lightsCongestion assist (amber)The traffic jam assist works together with adaptive cruise control. Its symbol turns from green to amber as heavy traffic builds up ahead; if the driver does not take over as the congestion gets closer, it turns red.On Audi
Consult instructions for use (book with i)2 meaningsConsult instructions for use (book with i)Tells the user to consult the instructions for use before using the device. On medical electrical equipment the same book symbol is also used to mean follow the operating instructions.Differs by brand.On ISO 15223-1
Contains hazardous substancesMedical device label symbolsContains hazardous substancesThe device contains substances that may be carcinogenic, mutagenic or toxic to reproduction (CMR), or that have endocrine-disrupting properties. Further details are given in the information supplied with the device.On ISO 15223-1
Contains natural rubber latexMedical device label symbolsContains natural rubber latexNatural rubber latex or dry natural rubber is used as a material in the device or in its packaging. This matters for people with a latex allergy.On ISO 15223-1
Contains sufficient for <n> testsMedical device label symbolsContains sufficient for <n> testsTells you how many IVD tests the kit or reagent is enough for in total. The actual number replaces or follows the letter n.On ISO 15223-1
ContinuousHeating & air conditioningContinuousButton and indicator for continuous operation: the dehumidifier keeps removing moisture without stopping at a target humidity. While it is on, the humidity setting is automatic and cannot be changed.On MAD50C1AWS
Control (CONTROL)Medical device label symbolsControl (CONTROL)Marks a control material, used to check that another device, such as a test or analyser, performs as expected. Variants add a second box: minus for a negative control, plus for a positive control, or a number such as 1, 2 or 3 for different control levels.On ISO 15223-1
Conventional heating (top and bottom)3 meaningsConventional heating (top and bottom)The upper and lower heating elements work together for traditional static baking. Heat comes evenly from above and below, so both sides of the food cook evenly. Suits cakes, sponge, pastry, baked pasta, lasagne and pizza. Preheat for about 10 minutes.Differs by brand.On Candy
Cooked dish / soup (freezer storage chart)RefrigerationCooked dish / soup (freezer storage chart)In the frozen-food storage chart this pictogram stands for cooked dishes such as soup. Stored in a four-star freezer compartment, it keeps for 2 to 3 months.On Refrigeration
Cooking in progressCookingCooking in progressOn the electronic timer display this symbol means the oven is enabled and, in an automatic programme, that cooking is running. After a power cut it is missing and the oven will not heat until you set the clock: press + and − together, then set the time.On Candy