The Hörmann HSE 4 BS hand-held transmitter is a practical accessory for opener technology that enables reliable control of garage door openers. With its high-gloss plastic surface and chrome-plated die-cast zinc caps, it combines functionality and attractive design. The hand-held transmitter is designed for use in dry rooms and offers temperature resistance from 0 °C to +50 °C. It is powered by a lithium button cell (type CR 2032), which is included in the scope of delivery. The hand-held transmitter is compact and lightweight, making it ideal for everyday use. It is also equipped with a key ring so that it can be conveniently attached to a key ring. These features make the HSE 4 BS a practical solution for controlling garage doors.