Marantec Digital 302, 304, 313, Comfort 220, 250, 252 Garage Remote Control Operating Frequency: 433.92 MHz Encoding Type: Fixed Code Button Options: 2-button or 4-button models Power Source: CR2032 battery (included) Compatible with: Marantec Digital 302, 304, 313, Comfort 220, Comfort 250, Comfort 252, Comfort 270, AZ021, 64176, Digital 382, Digital 384, D302, D304, D313, D321, D323, Command 131, Digital 211, 212, 214, 221, 222, 224, 231, 232 Programming Instructions: 1. Clear existing code: Press and hold buttons A and B until the LED flashes three times. Release button B while continuing to hold button A, then press button B slowly three times until the LED flashes. Release button A to complete clearance. 2. Copy code from original remote: Place the duplicator close to the original transmitter. Press and hold button A on the original transmitter, then press and hold button A on the duplicator until the LED flashes. Release both buttons to complete copying. Repeat for additional buttons. Suitable for: - Garage door openers - Gate operators - Home automation devices - Lighting controls Package Includes: - Remote control - CR2032 battery - English instruction manual