Wayne-Dalton 3728OU Garage Door Opener, 3/4 HpHighlights: 3 4 Hp Chain Drive Chainmax 1000 Provides intelligent design for the homeowner that wants quiet performance with superior design and conveniences that fit their busy lifestyle The ChainMax 1000 comes with (2) 3 button remotes, a wall console and a wireless keypad Auto Seek Dual Frequency: system will automatically seek either the 315 or 390 Mhz frequency produced by a remote helping to ensure the opener will respond regardless of nearby