MR855MYQ Merlin Garage Roller Door SilentDrive Elite Motor Automatic Opener

It suits spring balanced residential roller doors up to 18m2 curtain area, 4.5m maximum door height and 120kg maximum door mass. You also need at least 45mm from the edge of the curtain to the edge of the bracket, and a door axle no larger than 35mm diameter.

The MR855MYQ replaces the MR800, MR850, MR850EVO and MR855EVO.

No. Battery backup is an optional Merlin accessory sold separately. The MR855MYQ is compatible with it, unlike the MR655MYQ which does not support battery backup at all.

Yes, but myQ needs two extra parts, the Merlin myQ Gateway and Merlin Safety IR Beams. Neither is included in the box. You also need a router with a continuous internet connection.

One year when purchased online, under Merlin's online warranty policy. The 7 year manufacturer warranty requires professional installation and professional servicing of both the opener and the door in years three and five.

The MR855MYQ leaves the factory configured for right hand installation. It can be changed during setup, and the installation manual covers the process.

The MR855MYQ opens larger doors at 18m2 against 16.5m2, has more peak power at 550N against 500N, and supports optional battery backup which the MR655MYQ does not. Both need the same 45mm of side room.

Yes. The included E970M remotes use Security+ 2.0 rolling code encryption and transmit across three frequencies, 433.30, 434.54 and 433.92 MHz, which prevents code grabbing and reduces interference.

Press and hold the button on the remote you want to use, then press and release the S button on the opener. Release the remote button when the courtesy light flashes twice. If the light does not flash, the code was not learned and you need to repeat it.

Merlin requires infrared safety beams if the force at the closing edge of the door exceeds 400N, roughly 40kg. They are also mandatory for myQ to work.