These remotes and openers came around 1993-1997 which was after the Chamberlain DIP switch remotes but before Security+.
Transmits on 390Mhz. FCC ID: HBW0710
The two remotes that I have are model 81LM which are both single-button. Some research suggests that 82LM and 83LM also exist, which have 2 and 3 buttons respectively. The chip used in the remote looks like it is from Texas Instruments with part number 125C79
are they actually used?
Probably used less than MegaCode for openers that haven’t been replaced or upgraded but a lot more than the old DIP switch remotes. Chamberlain has their universal style remotes like the 893Max that cover all their openers made since 1993 to now, so Billion Code to Security+ 2.0. The opener my remotes’ go-to is still in use and would still be using these remotes if it had not been recently upgraded with an 850LM receiver so it can use the new Security+ 2.0 remotes.
Does Flipper work with Chamberlain removes that use the Security 2.0+ protocol?
most say yes , but some can’t, it’s okay to tie a flipper to the gate. you need to create a new remote, put the receiver into programming mode, and add it, then press the transmission on the flipper several times so that the receiver is synchronized with the transmitter. if something does not work out, recreate the remote control and repeat everything again
is CHamberlain remote control with CMT 2160A encryption?
