Controll-A-Door SDO-2V3 Tri-Tran+ Homeowner's Manual Brandname: Featuring Category: Garage Door Opener Total Pages: 20 Table of contents TableofContents2TableofContents32Features43Specifications54OperatingYourDoor65UserOperatingControls76OpenerSafetySecurity87SafetyTesting98CodingTransmitters108CodingTransmitters119TroubleshootingGuide129TroubleshootingGuide1310DoorMaintenance1410OpenerMaintenance1511Warranty1611Warranty1712OptionalAccessories1813ServiceSchedule19Controll-A-Door20