LiftMaster Interlock Switch Kit N4 | LIF-K74-19987-N 20-3075C-4 motor A Control Box DC Control

A Control Box DC Control / Logic Board (Pre 2016 UL)

the system can be quickly reset without the need for major repairs

The P120009 control board provides precise power distribution and signal coordination

| HYS-MX2228-14

Also works for 8′ x 10′

LiftMaster Interlock Switch Kit N4 | LIF-K74-19987-N 20-3075C-4 motor A Control Box DC ControlLiftMaster Interlock Switch Kit N4 LIF K74 19987 N This is a replacement Interlock Switch Kit, N4. Compatible with LiftMaster Model J Commercial Door Operators; manufactured after 2005. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Genuine LiftMaster replacement part.