Liftmaster 850LM Universal Gate and Garage Door Opener Receiver

LiftMaster 850LM Universal Receiver – Multi-Frequency 3-Channel Receiver for Gates and Garage Doors

The LiftMaster 850LM Universal Receiver is a multi-channel, narrow-band radio receiver designed to support a wide range of gate and garage door operators in commercial buildings, gated communities, and multi-access applications. With Security+ 2.0™ rolling code technology, the receiver minimizes interference and eliminates callbacks caused by poor signal range.

Compatible with LiftMaster MAX series remotes and various wireless keypads, this receiver enables centralized control across multiple access points and device types.

Key Features

• Model Numbers: 850LM / 850LMC

• Frequency Support: Narrow-band operation on 310 MHz, 315 MHz, and 390 MHz

• Security:

  • Security+ 2.0™ technology for secure, interference-free operation

  • Supports Encrypted DIP and rolling code transmission

• Power Input:

  • 12–24V DC or AC

• Relay Outputs:

  • 1 FORM C relay

  • 2 FORM A relays

• Temperature Range:

  • Operational: -35°C to 65°C

  • Storage: -40°C to 85°C

• Design: Compact housing fits most gate and commercial door operators

Channel Configuration & Capacity

• Channel 1: Supports up to 50 remote controls

• Channel 2: Supports up to 20 remote controls

• Channel 3: Supports up to 20 remote controls

• Keypad Compatibility: Each channel allows 2 keyless entry devices

• Open/Close/Stop Function: Can be wired to enable full gate operator control with compatible remotes (e.g., 813LM)

Remote and Accessory Compatibility

Compatible Remote Controls:

• 890MAX

• 891LM

• 892LT

• 893LM

• 893MAX

• 894LT

Compatible Wireless Keypads:

• 878MAX

• MyQ Video Keypad

Note: If your operator does not support 12–24VDC/AC input, a power transformer (85LM) is required.