Superheterodyne single conversion receiver with 4 power relays and power supply 230Vac or 12-24Vac/dc. 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. 4 addictional inputs for external push buttons which allow to activate/deactivate the relays.