Abstract: A receiver unit for use with an electronic device such as a games player, digital video disc player or the like having a port for connection of a peripheral control device comprises: first connection means (18) allowing releasable electrical connection of the unit with the port of the electronic device; second connection means (20) allowing releasable connection of a peripheral control device, such as games pad or joystick; signal detection means (26) for receiving a signal from a remote transmitter such as a hand-held remote control device; and processing means (24) connected to said first and second connection means and to said signal detection means (26) to process received signals and supply them to said first connection means (18).