The Liftmaster LA400 / LA412 is an excellent choice for most light duty residential applications. The LA400 / LA412 is capable of operating gates up to 16' long and weighing up to 550LBS.

• Battery-run system ensures full function during power outage
• Low voltage (no electrician required) 
• Single or Dual Application
• One Remote Included
• Bolt on Adjustable Mounting Brackets
• Simple -to-set Electronic Limit System
• Timer to Close 0-180 Seconds
• Keyed Manual Disconnect 
• Slow Start and Stop
• Two Year Warranty (all components)