LiftMaster 312HM Gate and Garage Door Opener Universal Coaxial Receiver with Security+ 315MHz

The LiftMaster 312HM Universal Coaxial Receiver is a versatile access control solution designed to provide reliable wireless operation for commercial gate operators, garage door openers, and access control systems. Operating on 315 MHz, this receiver supports both Security+® rolling code technology and compatible DIP-switch remote controls, making it ideal for upgrades, replacements, and new installations.

Featuring flexible power options, selectable contact modes, and a detachable external antenna, the 312HM delivers dependable RF performance in a rugged aluminum enclosure built for long-term commercial use.

Key Features

• Model: 312HM (Equivalent to 312HMC)
• Frequency: 315 MHz
• Technology: Supports Security+® rolling code and compatible DIP-switch transmitters
• Universal Compatibility: Works with a wide range of gate operators and garage door openers
• Selectable Contact Modes: Momentary or constant output via onboard jumper
• Flexible Power Input: Supports multiple AC/DC voltage configurations
• External Antenna Included: 8" coaxial whip antenna improves signal reception
• Commercial-Grade Housing: Durable two-piece aluminum enclosure with removable cover
• FCC Certified

Technical Specifications

• Operating Frequency: 315 MHz
• Power Requirements:
• 12VDC
• 18–35VAC/DC (jumper selectable)
• Contact Type: Momentary or Constant (jumper selectable)
• Antenna: Detachable 8" coaxial whip antenna
• Housing Material: Aluminum
• Warranty: 3-Year Limited Warranty

Memory Capacity

• High-Security Memory: Stores up to 15 Security+® remote controls or keypads
• Standard Memory: Stores up to 31 LiftMaster remote control codes

Compatible Remote Controls & Keypads

• 371LM – 1-Button Remote Control
• 372LM – 2-Button Remote Control
• 373LM – 3-Button Remote Control
• 377LM – Wireless Keyless Entry Keypad

Applications

• Commercial gate operators
• Residential and commercial garage door openers
• Parking access systems
• Warehouse and industrial access control
• Security and perimeter entry systems
• Retrofit and receiver replacement projects

Benefits

• Upgrades older systems with modern Security+® technology
• Provides reliable long-range RF communication
• Supports multiple transmitter types for greater flexibility
• Easy integration with existing operators and control systems
• Rugged enclosure designed for commercial environments
• Flexible power and output configurations simplify installation