The Merlin SilentDrive BBU 850 is the supreme opener for residential roller doors with battery back up and wireless wall control.

Don’t let a power outage lock you out, battery back up means you will never get caught out. Ideal for large single or double residential roller doors.

Included accessories:

  • 2 x 3 button mini remotes
  • Circle button Wireless Wall Control
  • Battery Backup
  • Wireless keypad
  • Weight bar


  • Security: Transmitters communicate on multiple frequencies with encrypted rolling code ensuring the strongest frequency is selected every time, virtually eliminating interference while providing the highest level of security.
  • Up to 75% Less Energy: Uses less than 1 watt of power whilst in standby mode, meeting the world’s toughest energy standards.
  • Quiet and Powerful: The powerful and fast DC motor is quiet and built to last with the strength to open any branded domestic door.
  • Improved Transmitter Range: Up to 18% better range compared to other products which means you can start opening your garage door sooner.
  • Soft Start / Stop Function: Designed to ensure smooth and quiet door operation.
  • Works During Power Outages: Evercharge® Battery backup system ensures you can always operate your door even when there has been a power failure.
  • 2 Year Warranty: Backed by a 2 year / 5,000 cycle warranty (conditions apply) including wind lock applications.

For more details download the Merlin SilentDrive BBU 850 Spec Sheet.