HS 5 BS 868 MHz - BiSecur remote control from Hormann. 4-channel (+1 button for door query) transmitter.
 
The query button (middle button) is for detecting the status of your garage door -- If you are within range, you can detect if your door is open or closed, even if the garage door is not visible. This feature is only usable with the following Hörmann motors: SupraMatic E, SupraMatic P, ProMatic, LineaMatic, LineaMatic P, RotaMatic, and ESE receiver.
 
All BiSecur remote controls from Hormann are backward compatible and can be used with Hormann Series 1 or 2 868 MHz openers.