LiftMaster Warning Device Option Board with Red/Green Light Box

Item #: RDGRNCARD

Manufacturer: Chamberlain, LiftMaster

List price: $147.77

Manuals & Brochures:
Installation Manual,

DETAILS

• The Red/Green warning light card flashes a warning light for 10 seconds prior to the Timer to Close activating the door to close.
• Advanced warning of the door closing helps prevent traffic collisions with the door