Superheterodyne single conversion receiver with 4x24VA relays. Programming of transmitters can be carried out either directly on the receiver using the 2 push buttons, or remotely using the buttons of the transmitter. Utility for block memorization of the transmitters. General parameters of the receiver (relay, time, etc.) can only be done using the 2 push buttons of the receiver. All programming steps are displayed on the backlit LCD display. The internal data can be saved/restored to/from an external memory. Cover in polycarbonate black semitransparent.