Hormann HET / S24 BS Universal 2-channel ReceiverHormann 868. 3MHz BiSecur 2 channel Receiver This receiver can be fitted to most makes of operator which will then allow you to use the full range of Hormanns BiSecur radio hand transmitters and keypads. Particularly usefull if the hand transmitters for your old garage door or gate operator are no longer avaialble. or you want to use some of the Hormann keypads or thumb scanners with your existing operator. The unit is very easy to fit and requires a