LiftMaster 041C0296 Transformer (12V, RJO) FAS-12VDC7ABUPBOX Back up battery: 3VDC lithium

Back up battery: 3VDC lithium (button cell)

which would result in it indicating the presence of non-existent obstacles

LiftMaster Q209

| HYS-MX2387-16

LiftMaster 050DCRJL5

LiftMaster 041C0296 Transformer (12V, RJO) FAS-12VDC7ABUPBOX Back up battery: 3VDC lithiumLiftMaster 041C0296 Transformer (12V, RJO) This is a replacement 12V Transformer. Compatible with LiftMaster Model 8500W Elite Series DC Wall Mounted Garage Door Openers. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Genuine LiftMaster replacement part. Product Literature LiftMaster 041C0296 Replacement Guide