You can program a total of 90 remotes. 50 remotes on channel 1 and 20 remotes each for channels 2 & 3.

Is this compatible with my q?

It USED to be compatible with MyQ. I had it configured for the last two years, working fine, and hooked up to Amazon Key for garage deliveries. Today, for unrelated security reasons, we had to reset all the remote codes on the 850LM and re-add them. Now the MyQ app will NO LONGER allow you to pair with the 850LM. It is not a technical limitation, it is a product marketing decision. I suspect they want to force people to shell out hundreds of dollars to upgrade their whole garage door system if they want internet access. It's a very lame decision by liftmaster to break something that was ALREADY WORKING.

Will this work on a power garage door with no remote, only interior push-buttons?

It's basically a set of buttons that can be remotely activated. Supports up to 3 buttons to control up to three 1-button openers or one 3-button opener. Supports both NC and NO type on channel 3 for stop buttons. Remote not included, just get a new liftmaster 3 button and it will work. I went with a 4-button remote, I control the 3 channels of this receiver for my shed and the 1 button opener on my attached garage with 1 remote.

Will this work with liftmaster 855lm homelink repeater? learn via yellow button on 850lm.

Yes it will, I just did it. You may have to press the Homelink button in your car a few times before the 850LM learns it. That's what I had to do.

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850LM Universal Gate and Garage Door Opener Receiver

Product ID: 355980974

Details

Brand
LiftMaster
Colour
Grey
Connectivity technology
Ethernet HDMI
Item weight
0.1 Pounds
Product dimensions
18.3D x 13.5W

📏Compact universal fit

📶Multi-frequency radio tech

🔒Secure multi-remote access

AR$278630

Duties & taxes included

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Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚪 Unlock effortless access with next-gen security and control!

SECURE VEHICLE ACCESS - Enjoy safe, convenient entry to gated communities and commercial sites from your car.
UNIVERSAL COMPATIBILITY - Works flawlessly with 811LM, 813LM, and all MAX remotes for effortless integration.
COMPACT DISCREET DESIGN - Slim profile fits most gate and commercial door operators without hassle.
INTERFERENCE FREE CONNECTIVITY - Exclusive narrow band multi-frequency radio virtually eliminates signal dropouts.
SEAMLESS MULTI CHANNEL CONTROL - Manage up to 90 remotes across 3 channels for ultimate access flexibility.

The LiftMaster 850LM is a universal gate and garage door opener receiver featuring Security+ 2.0 technology with a narrow band multi-frequency radio that minimizes interference. It supports up to 90 remotes across three channels and is compatible with multiple remote models, offering secure, convenient vehicle access for gated communities and commercial facilities. Its compact design fits most operators, ensuring easy installation and reliable performance.

Specifications

ASIN	B0071EYS9M
Antenna Location	operating and providing access to gates and garage doors
Aspect Ratio	16:9
Audio Output Mode	Stereo
Best Sellers Rank	1,097,213 in DIY & Tools ( See Top 100 in DIY & Tools ) 4,364 in Gate Hardware
Box Contents	Remote, Wally Receiver
Brand Name	LiftMaster
Colour	Grey
Compatible Devices	Gate Operator
Customer Reviews	4.5 4.5 out of 5 stars (1,124)
Frequency Range	310 MHz, 315 MHz, 390 MHz
Global Trade Identification Number	00012381998500
Item Dimensions D x W x H	18.3D x 13.5W x 4.1H centimetres
Item Weight	0.1 Pounds
Manufacturer	LiftMaster
Manufacturer Part Number	850LM
Model Number	850LM
Network Connectivity Technology	Ethernet, HDMI, USB
Number of Items	1
Software Update Supported to Date	unknown
Specification Met	FCC Part 15
Supported Audio Format	Dolby Digital, DTS, AAC, MP3, PCM
Supported Standards	HDMI, MPEG, MP4, AAC, PCM
Total Video Out Ports	2
UPC	012381998500
Unit Count	1.0 count
Video Output Resolution	1080p pixels
Voltage	12 Volts (DC)

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