In brief
Item |
Value |
Product |
Chamberlain LiftMaster 971LM remote |
Frequency |
390 MHz |
Modulation |
AM650 or AM270 ? |
FCC ID |
HBW1241 |
Control IC |
125C0126, 9B1847, 0042 (might have misread) |
Source |
971LM Remote Control | LiftMaster |
Details
I only have a 1 button model, but the circuit board has places for 4 buttons. I could try jumping/shorting those briefly to see if that functionality works on this remote. There’s a good chance it’s just treated as 4 unique rolling codes given the manual advertises using any button to control any Security+ device.
Recordings
LiftMaster 971LM 390 MHz remotes.zip (42.0 KB)
Archived as the Security+ 1.0 protocol has been implemented. If needed, feel free to message me.
I wasn’t sure if it was AM270
or AM650
, so I recorded a bit with both modulations.
Filename |
Description |
LiftMaster_Remote1_AM650.sub |
10× pressing remote 1’s single button, recorded with AM650
|
LiftMaster_Remote2_AM270.sub |
10× pressing remote 2’s single button, recorded with AM270
|
LiftMaster_Remote3_AM650.sub |
10× pressing remote 3’s single button, recorded with AM650
|
Note: All three remotes are the same model. I merely wasn’t sure which modulation it’s using or if it’d be helpful to have multiple. Trying either FM[…]
modulation appeared to not contain any data based on the Flipper’s signal graph.
Photos
Skipped as suggested. I can take photos if desired though!