LiftMaster 8550 8550 Manual - Page 29

Features Your garage door opener is equipped with features to provide you with greater control over your garage door operation. TIMER-TO-CLOSE The Timer-to-Close feature automatically closes the door after a specified time period that can be adjusted using the door control. Prior to the door closing there will be an audible and visual alert. MyQ™ MyQ™ technology uses a 900MHz signal to provide two-way communication between the garage door opener and MyQ™ accessories. Your garage door opener is compatible with up to 16 MyQ™ accessories. SECURITY+®2.0 REMOTE CONTROLS AND DOOR CONTROLS Your garage door opener is compatible with up to 2 Smart Control Panels or 4 of any other Security+®2.0 door controls. Your garage door opener has already been programmed at the factory to operate with your remote control, which changes with each use, randomly accessing over 100 billion new codes. The garage door opener is compatible with up to 40 remote controls. THE PROTECTOR SYSTEM® (SAFETY REVERSING SENSORS) When properly connected and aligned, the safety reversing sensors will detect an obstruction in the path of the infrared beam. If an obstruction breaks the infrared beam while the door is closing, the door will stop and reverse to full open position, and the opener lights will flash 10 times. If the door is fully open, and the safety reversing sensors are not installed, or are misaligned, the door will not close from a remote control. However, you can close the door if you hold the button on the door control or keyless entry until the door is fully closed. The safety reversing sensors do no effect the opening cycle. ENERGY CONSERVATION For energy efficiency the garage door opener will enter sleep mode when the door is fully closed. The sleep mode shuts the garage door opener down until activated. The sleep mode is sequenced with the garage door opener light bulb; as the light bulb turns off the sensor LEDs will turn off and whenever the garage door opener lights turn on the sensor LEDs will light. The garage door opener will not go into the sleep mode until the garage door opener has completed 5 cycles upon power up. LIGHTS The garage door opener light bulbs will turn on when the opener is initially plugged in; power is restored after interruption, or when the garage door opener is activated. The lights will turn off automatically after 4-1/2 minutes. An incandescent A19 light bulb (100 watt maximum) or for maximum energy efficiency a 26W (100W equivalent) compact fluorescent light (CFL) bulb may be used. LIGHTS FEATURE The garage door opener is equipped with an added feature; the lights will turn on when someone enters through the open garage door and the safety reversing sensor infrared beam is broken. For added control over the light bulbs on your garage door opener, see the Door Control section. USING YOUR GARAGE DOOR OPENER The garage door opener can be activated through a wall-mounted door control, remote control, wireless keyless entry or MyQ™ accessory. When the door is closed and the garage door opener is activated the door will open. If the door senses an obstruction or is interrupted while opening the door will stop. When the door is in any position other than closed and the garage door opener is activated the door will close. If the garage door opener senses an obstruction while closing, the door will reverse. If the obstruction interrupts the sensor beam the garage door opener lights will blink 10 times. However, you can close the door if you hold the button on the door control or keyless entry until the door is fully closed. The safety reversing sensors do no effect the opening cycle. The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. 29