The Linear Delta 3 DT2A Model 2-Button Garage Door opener remote transmitter is a great inexpensive and durable access control device that pairs with the DR3 Delta receiver 310mhz.
This two button transmitter is for garage door openers with Linear radio controls with 8 Dip Switches Code Set for easy programming. Compatible with ALL Linear/ Moore-o-Matic Delta 3 System products. (part number: DNT00017A)