C2E616202_ST_C1 Schneider Cuadro H 4-Gang Stainless Steel KNX Keypad Bus Node SELV 86mm ETS Ready Unit

Four gangs is the capacity where a keypad starts to replace a row of switches, and the C2E616202_ST_C1 delivers it with a stainless steel face. The article number is read in three parts: 202 for four gangs, 02 for a metal faceplate rather than the 01 plastic or the 03 glass of the identical four-gang device, and ST for the stainless finish.

Electrically there is nothing to size, because the plate is a bus node and not a switch: it takes 21 to 30 volts DC from the KNX line at approximately 13 milliamperes, holds the coupling unit inside the housing, and terminates two cores — red to plus and black to minus. Whatever the four gangs control is decided by the group addresses assigned in ETS, which is why the same part number can serve a room of lighting groups today and a room of blinds and scenes after a refit. The plate measures 86 × 86 × 29 millimetres.

With four gangs the layout convention matters more than the finish, but the finish adds its own requirements. The proximity function is microwave based and its sensitivity is tied to the panel material, with the material and one of two sensitivity levels set in ETS, so the steel face must be declared as steel. The instructions also note that detection varies with the environment, the panel material, and the size and speed of the hand — which is why the level should be chosen for the room and not copied from another project.

The metal front makes the SELV rules concrete: basic insulation to the retaining ring must be maintained, and where the plate sits in a multi-gang frame with 230 V accessories, the separation is the installer's responsibility.

The four gangs themselves give eight operations once a long press is distinguished from a short one. The order that holds up is functional rather than positional, applied identically in every room of a type and written down with the group addresses.

Stainless four-gang plates suit rooms where four circuits of lighting and a metal finish are both wanted.

• Hotel rooms — used where the entrance position covers the general lighting, the bedside lighting, a bathroom circuit, and the curtain, and the plate has to sit beside stainless bathroom fittings.
• Residential kitchens and open-plan living areas — applied where the lighting is split between worktop, dining, and circulation, and the steel face matches the appliances.
• Corporate kitchens, staff rooms, and utility areas — specified because four clearly labelled gangs are easier to hand over than a scene panel, and the surface survives cleaning regimes that would dull a painted plate.
• Clinics and treatment rooms — used where general and examination lighting are separate circuits and the blind is motorised; where the same building has steel plates in the bathrooms, this version keeps the public rooms consistent in material while the gang count rises with the complexity of the space.