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The 8500 Liftmaster with 877MAX Keyless Entry is a great space saving side mounted unit. Compatible with sectional garage doors that have a front mount torsion spring with 1” shaft. The 8500 will handle a door up to 180 square feet in size 14’ tall and up to 650LB maximum weight.
One (1) 877MAX LiftMaster Keyless Entry Keypad
One (1) 893MAX 3-Button Remote Control
MyQ® Control Panel (889LM) One (1)
Remote Light 380LM One (1)
Power Door Lock 41A6102, safety sensors and cable tension monitor 41A6104
Liftmaster models 8500, 8500W and 8900W are NOT compatible with low headroom applications. Please contact us prior to purchase.
Top clearance: 3 1/2 " from center of torsion shaft to the top of the operator. Side clearance: 8” minimum required Approximately 1 ½” shaft exposed beyond bearing plate required to attach coupler. Unit physical dimensions 16 ½”L x 7”W x 6 ¾”D. The 8500 function can be controlled via smart phone when configured with the 828LM internet gateway [not included].
To reduce the risk of injury to persons - When the LiftMaster® Internet Gateway is used with garage door openers, the operator must be installed with sectional doors.
Please contact us prior to purchase if you are unsure about compatibility
Posted by Mark B on Mar 23rd 2021
Install was easy and took about 1.5 hours per door. Only issue was that “cable tension” sensor was not able to be installed due to no room being available near cable spool and door wheel track brackets....I had to just block cable tension sensor open so it thinks there is tension on cable.....other than that, both installs were simple and all hardware was in package and remotes already programmed for door opener. Very quite opener and I really like the slow start and slow stop cycle...The door lock function is nicely done and works well.
Posted by Michael H Bombardier on Mar 18th 2021
Opener works great (so far, only been a couple weeks) and Installation was very easy. Only one issue while setting up: I had pulled the release rope and when I reset it it didn’t go all the way back up. I didn’t notice at first so when I was running it I thought it was broken. Once I saw the slide on the side of the opener hadn’t gone all the way up I pushed it up and it engaged again. Following that it worked great and the rest of the set up was as described in direction! One other item is that you only get about 40 foot of bell wire for the control box so in order for me to make it reach was to hang it about a foot off the ceiling. Will have to get a longer roll of wire so I can string it along the wall or ceiling and not have it hanging. Overall I really like it so far!
Posted by HJO on Feb 8th 2020
Overall I really like this door opener. It is the second one I have installed. And I have installed both myself. I like how it clears up overhead space in my garage.
Posted by Unknown on Apr 3rd 2017
Quiet, easy to install, works on high lift doors and doesnt cut into ceiling height.
Posted by Unknown on Mar 13th 2017
Installed this yesterday, Very quiet operation and works well, I really like the deadbolt locking system. Installation was simple, I would recommend this system.