The EUROLITE Foot Switch KLS Compact Light Set MK2 is a wireless foot switch for controlling KLS Compact Light Sets. It operates using a built-in 9 V 6F22 zinc-carbon battery and communicates at 433.92 MHz over distances of up to 30 m with line of sight. The unit uses passive convection cooling and features a black matte, hard-plastic housing with a non-slip pedal design. Its dimensions are 42.0 × 14.0 × 4.5 cm and its weight is 0.69 kg.