Heddolf 360 Mhz Frequency Garage Door Opener Remote Transmitter for Crusader Heddolf Overhead Door 360 Mhz frequency garage door opener remote Codes using 9 dip switches with 3 positions each (+/0/-) Transmitter for Crusader, Overhead Door & Heddolf. 9 dip switch trinary remote Compatible with Over Head Door, Crusader, Heddolf brand garage door openers.