LiftMaster 041C0494-1 Wall Control Panel Gate Operators by Model 2 up to 4s depending

2 up to 4s depending on the boom length

so it is compatible with most telephone entry systems and access control panels

LiftMaster 423LMC

3 - L & Z Brackets

LiftMaster 041C0494-1 Wall Control Panel Gate Operators by Model 2 up to 4s dependingLiftMaster 041C0494 1 Wall Control Panel This is a Chamberlain Security+ Wall Control Panel. For use with various Chamberlain Garage Door Openers. This door control is not compatible with Security+ 2. 0 Models. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Genuine LiftMaster replacement part. Also known as: LiftMaster 41C494 1 LiftMaster 41A5273 8