HK07 - surface rocker without lens, for on/off switches, universal switches, intermediate switches and pushbuttons, protection rating IP20, colour: anthracite HK07 switch range Switch range in purist design for modern accents. High-quality plastics, which can also be used in conjunction with glass frames, underpin the modern aesthetic. Thanks to the standardised 55x55 millimetre rocker size, countless technical solutions can be easily integrated.