LiftMaster 8550W 8550W Owners Manual - Page 3

Preparation MyQ® Serial Number Write down the following information for future reference: MyQ® Serial Number: Accessory Setup Code: Product S/N: Date of Purchase: / / MyQ® Serial Number Accessory Setup Code Product S/N Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is installed, operated, maintained and tested in strict accordance with the instructions and warnings contained in this manual. When you see these Safety Symbols and Signal Words on the following pages, they will alert you to the possibility of serious injury or death if you do not comply with the warnings that accompany them. The hazard may come from something mechanical or from electric shock. Read the warnings carefully. Mechanical Electrical When you see this Signal Word on the following pages, it will alert you to the possibility of damage to your garage door and/or the garage door opener if you do not comply with the cautionary statements that accompany it. Read them carefully. Unattended Operation The Timer-to-Close (TTC) feature, the MyQ® Smartphone Control app, and MyQ® Garage Door and Gate Monitor are examples of unattended close and are to be used ONLY with sectional doors. Any device or feature that allows the door to close without being in the line of sight of the door is considered unattended close. The Timer-to-Close (TTC) feature, the MyQ® Smartphone Control, and any other MyQ® devices are to be used ONLY with sectional doors. 3