LiftMaster Main Board, EL1SS | LIF-K001D7121-1 RBtec weather-resistant materials and finished in

weather-resistant materials and finished in a crisp white color

helping maintain the long-term reliability of the operator system

Object In Range: Flashing Green LED on each input

plug-in loops

providing reliability and durability for long-term use

LiftMaster Main Board, EL1SS | LIF-K001D7121-1 RBtec weather-resistant materials and finished inLiftMaster Main Board, EL1SS LIF K001D7121 1 This is an EL1SS Main Replacement Board. Compatible with LiftMaster Model EL1SS Telephone Entry and Access Control Systems. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Genuine LiftMaster replacement part.