C2E616101_WE_C1 Schneider Cuadro H KNX Push Button Two Gang White 15mA Integrated Bus Coupler Unit

The C2E616101_WE_C1 is the white two gang member of the Cuadro H KNX push button range — the version specified in the largest quantities, because a white plate on a white wall is the least conspicuous control device available. The engineering is deliberately plain: a polycarbonate plate with a glossy surface, 86 by 86 millimetres and 29 millimetres deep, fixed in a flush mounting box and connected to the KNX line through a bus terminal.

It draws 21 to 30 volts DC at a rated current of 15 milliamperes and carries an integrated coupling unit, so commissioning is a matter of addressing a bus participant rather than wiring a controller. The technical type is listed as proximity and the switch application is control switch, which describes a device that reacts as a hand approaches and sends the resulting telegram to the bus.

Two gang in white is the device most often installed without a written specification, and that is where problems appear later: the plate works, but nobody has recorded which rocker carries which group address, so a replacement device fitted after a decoration refresh is commissioned by trial and error.

The practical discipline is a one-page schedule per room type, listing the two rockers, the short and long functions, and the group addresses behind them. The proximity behaviour deserves the same attention; it is a convenience in a corridor and an irritation in a bedroom, and the setting should be decided per room rather than left at the default.

On a white glossy plate the visible issues are different from a dark one: the plate shows marks and the joints to the surrounding frame, so the frame has to be fitted squarely and the wall finished before the device is clipped on — not after.

• Office and commercial interiors are the largest application, where a white two gang plate is repeated across cellular offices and meeting rooms and the cost per position matters more than the number of functions.
• Hotels use it in back-of-house areas and staff rooms where a simple two-circuit control is sufficient and a white plate is the house standard.
• Residential projects apply it throughout apartments where the lighting is conventional and the client does not want a control panel on every wall.
• Schools and clinics specify it because a two gang plate is easy to understand and to replace.
• Public buildings use it in circulation areas where durability and simplicity matter more than flexibility.

Where the same building uses several gang counts in white, this version covers the small rooms and the higher counts cover the open areas, which keeps the documentation and the spares holding manageable.