This kit includes a part, and decals, to represent three radio devices in a radio rack. This image from the kit's instructions shows it. The facias of the radio devices are visible.
But this part does not correctly represent the radios found in a Tiger. (It is possible that Model Factory Hiro referred to the Tiger of Bovington Museum, which has a non-standard radio setup.)
A typical Tiger would have these two radio devices. They would occupy the top two slots in the Tiger's radio frame. A platoon leader might also have a second receiver (the left-hand device) in the lower slot of the radio frame.
But this model kit has an incorrect radio receiver in its top left slot; a type that ordinary Tigers would not use. Also, the kit has three devices with no option to omit one of them.