Remote control radio (RF) for gate/door - compatible replacement for MARANTEC DIGITAL D304 868 MHz same design and functions - $24.3 : REMOTE CONTROL WORLD
Comfort 200 Series
Comfort 250, 252 - Marantec
Marantec Comfort 250 Operating instructions : Free Download, Borrow, and Streaming : Internet Archive
Comfort 200 Series
Smart garage door opener for Marantec Comfort 250 - ismartgate
433.92MHz Remote control for Marantec Garage Gate Digital 302 304 313 Comfort 220 250 252