Will a Chamberlain remote work with Marantec?

No, a Chamberlain remote will not work with a Marantec garage door opener. The two brands use completely different rolling code radio frequencies and protocols. Chamberlain (and the related LiftMaster and Craftsman lines) uses the Security Plus 2.0 system on 310, 315, and 390 MHz. Marantec uses its own rolling code system on 315 MHz with a proprietary handshake. There are no universal remotes that bridge both protocols cleanly, although a few aftermarket multi-frequency remotes and a Marantec-branded universal receiver can be added to a Marantec opener as a workaround. The simplest solution is to buy a Marantec-brand remote like the Comfort 220 or 250, which pairs natively with all current Marantec openers and matches their rolling code spec.