Liftmaster 841LM Automatic Garage Door Lock

Easy to install, plugged right in to the electrical connection. Worked very smoothly

I ordered two of these for my garage, due to a slew of break ins in my area. Gotta say these things are awesome, and it's always cool to hear your garage door locking like a vault. The installation was fairly easy, but you do need some specialized tools for it. I don't even know what it's called, but is a drill bit that gauges up as you drill a hole in the track of the garage door. Use the template, measure, and then measure again. I almost messed up and had one of the bolts hitting the wheel on the garage door. Don't do what I did. Make sure there's enough clearance between the garage roller and template before you start.

The latching garage door lock works well as an option to have wifi locks on a roll up door. The locks are wired to a circuit that switches 12v with 2 amps and the app used is a simple Wemo or Leviton app for a plug. When the plug is on the locks are open. When power is off they close. The code was written such that if the power is lost the locks will engage. The locks have a manual latch as well in case the wifi goes out.

This doesn’t work with my garage and I’m stuck with it because i missed the return window.

My original door lock (3 years old ) started to fail to unlock even though it was ok to lock. I understand this is not uncommon with this device and I am concerned that the new one will not last more than a few years based on other reviews. However, it is very easy to replace. I took one star off due to the expected lifespan.

My other model went out after about 6 years, tried everything and ultimately caved and bought this. Easy Switch and install.

Product received is OEM, but is repackaged and not as advertised. Two major differences that matter. Screws received were not original but replacements with raised flat-heads (versus just flat heads), this reduces clearance. Wiring on the unit received was NOT 33' (10m), and was about 12', so I had to splice wires to install properly. Because this is a 'repackaged' new unit, likely no manufacturers warranty.I understand this Garage Door Lock comes bundled with a specific model Garage Door Opener that is frequently 'sold on the side'. That said, it is new, does work once you overcome the challenges.

Was delivered on time, and I had no problems installing on track. My garage track already had the predrilled holes on them, so all I had to do was screw the device in. The lock works great, easy to install and I will buy a 2nd for the other side. I recommend this lock if your LiftMaster has the shield icon, it does add more security to the garage door from being lifted. Once I press the garage button, the lock automatically unlocks and when it’s closing, the bolt engages and locks.