The LiftMaster 811LMX Single-Button Remote Control is a professional-grade transmitter designed for use with Security+ 2.0 commercial gate and door operators. Operating at 390 MHz, it delivers encrypted, secure, and reliable communication between your remote and receiver, ensuring maximum protection against signal interference and unauthorized access.

Compact and durable, the 811LMX features a single programmable button for controlling one door, gate, or access point. Its rolling code technology changes the access code every time it’s used, providing superior security for commercial and residential applications.

Key Features

• Works with LiftMaster Security+ 2.0 receivers and operators

• Single-button remote for one door or gate

• 390 MHz frequency with rolling code encryption

• LED indicator and long-life 3V lithium battery (included)

• Compact design with durable key ring clip for portability

Specifications

• Model: LiftMaster 811LMX

• Type: Single-Button Remote Control Transmitter

• Frequency: 390 MHz

• Technology: Security+ 2.0 (encrypted rolling code)

• Number of Buttons: 1

• Battery: 3V Lithium (CR2032 included)

• Dimensions: 2.5 × 1.5 × 0.6 in

• Weight: 0.1 lb

• Color: Black

• Compatibility: Security+ 2.0 LiftMaster commercial openers and receivers

• Mounting Type: Keychain / Clip-on

• Country of Manufacture: Mexico

• Warranty: 1-Year Limited