The remote control Sdre-HSM4 868 MHz (not an original Hörmann HSM4 868) is ideal as a replacement remote control. It has 4 blue buttons and operates on a radio frequency of 868 MHz. The remote control Sdre-HSM4 HSM4 868 MHz can replace the following transmitters: Hörmann HSM4 868 MHz, Hörmann HS4 868 MHz, Hörmann HSM2, Hörmann HSP4 868, Hörmann HS1 868, Tubauto HSM4 868 MHz, Tubauto HS4 868 MHz DOES NOT work with Hörmann Bisecur HSE1 HSE2 HSE4 868 BS HS1 HS4 HS5 HSS4 HSP4 HSD2 Remote control marked "BS" This remote control is programmed by self-learning directly in the receiver, which is located near the motor or motorization of your garage door or gate. To program this remote control you must access the receiver, but you can also do it from a remote control that is already installed. programmed. This remote control uses the 868 MHz radio frequency and has blue buttons. Therefore, do not confuse this remote control with the one with gray buttons.