The Hörmann industrial remote control HSI 3 BiSecur is compatible with all drives that use a Hörmann 868 MHz BiSecur receiver, as well as with older Hörmann receivers that operate with the 868 MHz fixed code. The remote control features three function buttons, allowing it to operate up to three receivers or control up to three functions on a single receiver. It has a robust and water-resistant housing, along with extra-large buttons designed for industrial use.