Liftmaster 850LM Universal Gate and Garage Door Opener Receiver

The LiftMaster 850LM Universal Receiver is a three-channel, multi-frequency radio receiver designed for gates and commercial garage doors. With Security+ 2.0™ rolling code technology, it provides secure, interference-free operation for multi-access applications in commercial buildings and gated communities.

Key Features

• Model Numbers: 850LM / 850LMC
• Multi-frequency operation: 310, 315, and 390 MHz
• Security+ 2.0™ technology with rolling code and encrypted DIP support
• Power input: 12–24V DC or AC
• Relay outputs: 1 FORM C and 2 FORM A
• Operating temperature: -35°C to 65°C
• Compact housing fits most gate and door operator enclosures

Channel Capacity

• Channel 1: Supports up to 50 remotes
• Channel 2: Supports up to 20 remotes
• Channel 3: Supports up to 20 remotes
• Each channel allows 2 keyless entry devices
• Supports open/close/stop wiring with compatible remotes

Remote & Keypad Compatibility

• Remote Controls: 890MAX, 891LM, 892LT, 893LM, 893MAX, 894LT
• Wireless Keypads: 878MAX, MyQ Video Keypad

Additional Information

If the operator does not support 12–24VDC/AC input, a LiftMaster 85LM power transformer is required.