The Hörmann HSE 4 BS hand-held transmitter is a versatile and practical device that has been specially developed for controlling garage door openers. With its compact design and textured plastic surface, which is finished with chrome-plated die-cast zinc caps, this hand-held transmitter offers both functionality and an attractive design. It operates in the 868 MHz frequency range and enables up to four different door operators to be controlled via the four integrated buttons. The hand-held transmitter is battery-operated and is supplied with a CR2032 lithium button cell, which ensures a reliable power supply. Thanks to the practical key ring, the hand-held transmitter can be conveniently attached to the key ring, making it easier to use in everyday life. The temperature range of 0 °C to +50 °C also makes it suitable for use in various environments.