41A3504 For Liftmaster Garage Opener Remote Antenna Range Extender Craftsman
Compatible with Models 312HM, 323LM, 412HM, 422LM, 423LM when remote operation is needed
Kit includes:
- 16′ of co-axial cable, with F type fittings at both ends
- A 13″ whip antenna
- Mounting bracket
Also known as: 41A3504-1