LiftMaster GH GH -Mechanical New style w/ thermal overload change Manual - Page 17

OPTIONAL PROGRAMMING CONNECT REVERSING EDGE DEVICE (OPTIONAL) The operator has been pre-wired to accept connection of a reversing edge device. Connect the normally open contacts to terminals T4 and T8 on the low voltage terminal block. A cut-off switch will de-activate the safety device during the last few inches of the door's downward travel. WARNING If control station cannot be installed where door is visible, or CAUTION if ANY device other than the control station is used to activate the door, a reversing edge MUST be installed on the bottom of the door. Failure to install a reversing edge under these circumstances may result in SERIOUS personal INJURY or DEATH to persons trapped beneath the door. NOTICE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense. AVERTISSEMENT ATTENTION ADVERTENCIA PRECAUCIÓN 17