The EUROLITE Foot Switch KLS Compact Light Set AIR is a wireless foot controller designed for the KLS compact light set AIR. It operates on one included 9 V E-block battery and provides a wireless range of up to 30 m with line-of-sight. The controller has a non-slip matte black pedal housing and protection class III. Its dimensions are 14 cm in length, 42 cm in width and 4 cm in height, with a weight of 0.74 kg.